2011-07-22 Kwok Cheung Yeung <kcy@codesourcery.com>

gdb/
	* defs.h: Add guard against inclusion in gdbserver.
	(struct ptid, ptid_t): Move to common/ptid.h.
	(xfree, xzalloc, xasprintf, xvasprintf, xstrprintf, xstrvprintf,
	xsnprintf, internal_error): Move to common/common-utils.h.
	(nomem): Delete.
	* gdb_assert.h: Move into common/ sub-directory.
	* gdb_locale.h: Ditto.
	* gdb_dirent.h: Ditto.
	* inferior.h (minus_one_ptid, null_ptid, ptid_build, pid_to_ptid,
	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal, ptid_is_pid):
	Move into common/ptid.h.
	* xml-support.c (xml_escape_text): Move into common/xml-utils.c.
	(gdb_xml_create_parser_and_cleanup_1, xml_fetch_context_from_file):
	Change nomem to malloc_failure.
	* xml-support.h (xml_escape_text): Move into common/xml-utils.h.
	* utils.c (nomem): Rename to malloc_failure.
	(xmalloc, xzalloc, xrealloc, xcalloc, xfree, xstrprintf, xasprintf,
	xvasprintf, xstrvprintf, xsnprintf): Move to common/common-utils.c.
	(gdb_buildargv): Change nomem to malloc_failure.
	* infrun.c (null_ptid, minus_one_ptid, ptid_build, pid_to_ptid,
	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal,
	ptid_is_pid): Move into common/ptid.c.
	(initialize_infrun): Delete initialization of null_ptid and
	minus_one_ptid.
	* linux-nat.c (linux_nat_xfer_osdata): Defer to
	linux_common_xfer_osdata.
	* Makefile.in (SFILES): Add common/common-utils.c, common/xml-utils.c,
	common/ptid.c and common/buffer.c.
	(HFILES_NO_SRCDIR): Add common/common-utils.h, common/xml-utils.h,
	common/ptid.h, common/buffer.h and common/linux-osdata.h.
	(COMMON_OBS): Add xml-utils.o, common-utils.o, buffer.o and ptid.o.
	(common-utils.o, xml-utils.o, ptid.o, buffer.o, linux-osdata.o): New
	rules.
	* common/gdb_assert.h: New.
	* common/gdb_dirent.h: New.
	* common/gdb_locale.h: New.
	* common/buffer.c: New.
	* common/buffer.h: New.
	* common/ptid.c: New.
	* common/ptid.h: New.
	* common/xml-utils.c: New.
	* common/xml-utils.h: New.
	* common/common-utils.c: New.
	* common/common-utils.h: New.
	* common/linux-osdata.c: New.
	* common/linux-osdata.h: New.
	* config/alpha/alpha-linux.mh (NATDEPFILES): Add linux-osdata.o.
	* config/arm/linux.mh (NATDEPFILES): Ditto.
	* config/i386/linux.mh (NATDEPFILES): Ditto.
	* config/i386/linux64.mh (NATDEPFILES): Ditto.
	* config/ia64/linux.mh (NATDEPFILES): Ditto.
	* config/m32r/linux.mh (NATDEPFILES): Ditto.
	* config/m68k/linux.mh (NATDEPFILES): Ditto.
	* config/mips/linux.mh (NATDEPFILES): Ditto.
	* config/pa/linux.mh (NATDEPFILES): Ditto.
	* config/powerpc/linux.mh (NATDEPFILES): Ditto.
	* config/powerpc/ppc64-linux.mh (NATDEPFILES): Ditto.
	* config/s390/s390.mh (NATDEPFILES): Ditto.
	* config/sparc/linux.mh (NATDEPFILES): Ditto.
	* config/sparc/linux64.mh (NATDEPFILES): Ditto.
	* config/xtensa/linux.mh (NATDEPFILES): Ditto.

gdbserver/
	* linux-low.c (compare_ints, unique, list_threads, show_process,
	linux_core_of_thread): Delete.
	(linux_target_ops): Change linux_core_of_thread to
	linux_common_core_of_thread.
	(linux_qxfer_osdata): Defer to linux_common_xfer_osdata.
	* utils.c (malloc_failure): Change type of argument.
	(xmalloc, xrealloc, xcalloc, xsnprintf): Delete.
	* Makefile.in (SFILES): Add common/common-utils.c, common/xml-utils.c,
	common/linux-osdata.c, common/ptid.c and common/buffer.c.
	(OBS): Add xml-utils.o, common-utils.o, ptid.o and buffer.o.
	(IPA_OBJS): Add common-utils-ipa.o.
	(ptid_h, linux_osdata_h): New macros.
	(server_h): Add common/common-utils.h, common/xml-utils.h,
	common/buffer.h, common/gdb_assert.h, common/gdb_locale.h and
	common/ptid.h.
	(common-utils-ipa.o, common-utils.o, xml-utils.o, linux-osdata.o,
	ptid.o, buffer.o): New rules.
	(linux-low.o): Add common/linux-osdata.h as a dependency.
	* configure.srv (srv_tgtobj): Add linux-osdata.o to Linux targets.
	* configure.ac: Add AC_HEADER_DIRENT check.
	* config.in: Regenerate.
	* configure: Regenerate.
	* remote-utils.c (xml_escape_text): Delete.
	(buffer_grow, buffer_free, buffer_init, buffer_finish,
	buffer_xml_printf): Move to common/buffer.c.
	* server.c (main): Remove call to initialize_inferiors.
	* server.h (struct ptid, ptid_t, minus_one_ptid, null_ptid,
	ptid_build, pid_to_ptid, ptid_get_pid, ptid_get_lwp, ptid_get_tid,
	ptid_equal, ptid_is_pid, initialize_inferiors, xml_escape_text,
	internal_error, gdb_assert, gdb_assert_fail): Delete.
	(struct buffer, buffer_grow, buffer_free, buffer_init, buffer_finish,
	buffer_xml_printf, buffer_grow_str, buffer_grow_str0): Move to
	common/buffer.h.
	* inferiors.c (null_ptid, minus_one_ptid, ptid_build, pid_to_ptid,
	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal, ptid_is_pid,
	initialize_inferiors): Delete.

49 files changed, 1759 insertions, 1321 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index a75f83191ed..14e2a7f8f7a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,67 @@
+2011-07-22  Kwok Cheung Yeung  <kcy@codesourcery.com>
+
+	* defs.h: Add guard against inclusion in gdbserver.
+	(struct ptid, ptid_t): Move to common/ptid.h.
+	(xfree, xzalloc, xasprintf, xvasprintf, xstrprintf, xstrvprintf,
+	xsnprintf, internal_error): Move to common/common-utils.h.
+	(nomem): Delete.
+	* gdb_assert.h: Move into common/ sub-directory.
+	* gdb_locale.h: Ditto.
+	* gdb_dirent.h: Ditto.
+	* inferior.h (minus_one_ptid, null_ptid, ptid_build, pid_to_ptid,
+	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal, ptid_is_pid):
+	Move into common/ptid.h.
+	* xml-support.c (xml_escape_text): Move into common/xml-utils.c.
+	(gdb_xml_create_parser_and_cleanup_1, xml_fetch_context_from_file):
+	Change nomem to malloc_failure.
+	* xml-support.h (xml_escape_text): Move into common/xml-utils.h.
+	* utils.c (nomem): Rename to malloc_failure.
+	(xmalloc, xzalloc, xrealloc, xcalloc, xfree, xstrprintf, xasprintf,
+	xvasprintf, xstrvprintf, xsnprintf): Move to common/common-utils.c.
+	(gdb_buildargv): Change nomem to malloc_failure.
+	* infrun.c (null_ptid, minus_one_ptid, ptid_build, pid_to_ptid,
+	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal,
+	ptid_is_pid): Move into common/ptid.c.
+	(initialize_infrun): Delete initialization of null_ptid and
+	minus_one_ptid.
+	* linux-nat.c (linux_nat_xfer_osdata): Defer to
+	linux_common_xfer_osdata.
+	* Makefile.in (SFILES): Add common/common-utils.c, common/xml-utils.c,
+	common/ptid.c and common/buffer.c.
+	(HFILES_NO_SRCDIR): Add common/common-utils.h, common/xml-utils.h,
+	common/ptid.h, common/buffer.h and common/linux-osdata.h.
+	(COMMON_OBS): Add xml-utils.o, common-utils.o, buffer.o and ptid.o.
+	(common-utils.o, xml-utils.o, ptid.o, buffer.o, linux-osdata.o): New
+	rules.
+	* common/gdb_assert.h: New.
+	* common/gdb_dirent.h: New.
+	* common/gdb_locale.h: New.
+	* common/buffer.c: New.
+	* common/buffer.h: New.
+	* common/ptid.c: New.
+	* common/ptid.h: New.
+	* common/xml-utils.c: New.
+	* common/xml-utils.h: New.
+	* common/common-utils.c: New.
+	* common/common-utils.h: New.
+	* common/linux-osdata.c: New.
+	* common/linux-osdata.h: New.
+	* config/alpha/alpha-linux.mh (NATDEPFILES): Add linux-osdata.o.
+	* config/arm/linux.mh (NATDEPFILES): Ditto.
+	* config/i386/linux.mh (NATDEPFILES): Ditto.
+	* config/i386/linux64.mh (NATDEPFILES): Ditto.
+	* config/ia64/linux.mh (NATDEPFILES): Ditto.
+	* config/m32r/linux.mh (NATDEPFILES): Ditto.
+	* config/m68k/linux.mh (NATDEPFILES): Ditto.
+	* config/mips/linux.mh (NATDEPFILES): Ditto.
+	* config/pa/linux.mh (NATDEPFILES): Ditto.
+	* config/powerpc/linux.mh (NATDEPFILES): Ditto.
+	* config/powerpc/ppc64-linux.mh (NATDEPFILES): Ditto.
+	* config/s390/s390.mh (NATDEPFILES): Ditto.
+	* config/sparc/linux.mh (NATDEPFILES): Ditto.
+	* config/sparc/linux64.mh (NATDEPFILES): Ditto.
+	* config/xtensa/linux.mh (NATDEPFILES): Ditto.
+
 2011-07-21  Matt Rice  <ratmice@gmail.com>
 
 	* NEWS: Add info macros and info definitions commands.
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 494f24f449e..46593e3745f 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -737,7 +737,9 @@ SFILES = ada-exp.y ada-lang.c ada-typeprint.c ada-valprint.c ada-tasks.c \
 	jit.c \
 	xml-syscall.c \
 	annotate.c common/signals.c copying.c dfp.c gdb.c inf-child.c \
-	regset.c sol-thread.c windows-termcap.c
+	regset.c sol-thread.c windows-termcap.c \
+	common/common-utils.c common/xml-utils.c \
+	common/ptid.c common/buffer.c
 
 LINTFILES = $(SFILES) $(YYFILES) $(CONFIG_SRCS) init.c
 
@@ -816,7 +818,9 @@ osdata.h procfs.h python/py-event.h python/py-events.h python/py-stopevent.h \
 python/python-internal.h python/python.h ravenscar-thread.h record.h \
 solib-darwin.h solib-ia64-hpux.h solib-spu.h windows-nat.h xcoffread.h \
 gnulib/extra/arg-nonnull.h gnulib/extra/c++defs.h gnulib/extra/warn-on-use.h \
-gnulib/stddef.in.h inline-frame.h
+gnulib/stddef.in.h inline-frame.h \
+common/common-utils.h common/xml-utils.h common/buffer.h common/ptid.h \
+common/linux-osdata.h
 
 # Header files that already have srcdir in them, or which are in objdir.
 
@@ -898,10 +902,12 @@ COMMON_OBS = $(DEPFILES) $(CONFIG_OBS) $(YYOBJ) \
 	trad-frame.o \
 	tramp-frame.o \
 	solib.o solib-target.o \
-	prologue-value.o memory-map.o memrange.o xml-support.o xml-syscall.o \
+	prologue-value.o memory-map.o memrange.o \
+	xml-support.o xml-syscall.o xml-utils.o \
 	target-descriptions.o target-memory.o xml-tdesc.o xml-builtin.o \
 	inferior.o osdata.o gdb_usleep.o record.o gcore.o \
-	jit.o progspace.o
+	jit.o progspace.o \
+	common-utils.o buffer.o ptid.o
 
 TSOBS = inflow.o
 
@@ -1933,6 +1939,26 @@ signals.o: $(srcdir)/common/signals.c
 	$(COMPILE) $(srcdir)/common/signals.c
 	$(POSTCOMPILE)
 
+common-utils.o: ${srcdir}/common/common-utils.c
+	$(COMPILE) $(srcdir)/common/common-utils.c
+	$(POSTCOMPILE)
+
+xml-utils.o: ${srcdir}/common/xml-utils.c
+	$(COMPILE) $(srcdir)/common/xml-utils.c
+	$(POSTCOMPILE)
+
+ptid.o: ${srcdir}/common/ptid.c
+	$(COMPILE) $(srcdir)/common/ptid.c
+	$(POSTCOMPILE)
+
+buffer.o: ${srcdir}/common/buffer.c
+	$(COMPILE) $(srcdir)/common/buffer.c
+	$(POSTCOMPILE)
+
+linux-osdata.o: ${srcdir}/common/linux-osdata.c
+	$(COMPILE) $(srcdir)/common/linux-osdata.c
+	$(POSTCOMPILE)
+
 #
 # gdb/tui/ dependencies
 #
diff --git a/gdb/common/buffer.c b/gdb/common/buffer.c
new file mode 100644
index 00000000000..4ada0bc2d12
--- /dev/null
+++ b/gdb/common/buffer.c
@@ -0,0 +1,144 @@
+/* A simple growing buffer for GDB.
+  
+   Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef GDBSERVER
+#include "server.h"
+#else
+#include "defs.h"
+#endif
+
+#include "xml-utils.h"
+#include "buffer.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+void
+buffer_grow (struct buffer *buffer, const char *data, size_t size)
+{
+  char *new_buffer;
+  size_t new_buffer_size;
+
+  if (size == 0)
+    return;
+
+  new_buffer_size = buffer->buffer_size;
+
+  if (new_buffer_size == 0)
+    new_buffer_size = 1;
+
+  while (buffer->used_size + size > new_buffer_size)
+    new_buffer_size *= 2;
+  new_buffer = xrealloc (buffer->buffer, new_buffer_size);
+  if (!new_buffer)
+    abort ();
+  memcpy (new_buffer + buffer->used_size, data, size);
+  buffer->buffer = new_buffer;
+  buffer->buffer_size = new_buffer_size;
+  buffer->used_size += size;
+}
+
+void
+buffer_free (struct buffer *buffer)
+{
+  if (!buffer)
+    return;
+
+  xfree (buffer->buffer);
+  buffer->buffer = NULL;
+  buffer->buffer_size = 0;
+  buffer->used_size = 0;
+}
+
+void
+buffer_init (struct buffer *buffer)
+{
+  memset (buffer, 0, sizeof (*buffer));
+}
+
+char*
+buffer_finish (struct buffer *buffer)
+{
+  char *ret = buffer->buffer;
+  buffer->buffer = NULL;
+  buffer->buffer_size = 0;
+  buffer->used_size = 0;
+  return ret;
+}
+
+void
+buffer_xml_printf (struct buffer *buffer, const char *format, ...)
+{
+  va_list ap;
+  const char *f;
+  const char *prev;
+  int percent = 0;
+
+  va_start (ap, format);
+
+  prev = format;
+  for (f = format; *f; f++)
+    {
+      if (percent)
+	{
+	  char buf[32];
+	  char *p;
+	  char *str = buf;
+	  
+	  switch (*f)
+	    {
+	    case 's':
+	      str = va_arg (ap, char *);
+	      break;
+	    case 'd':
+	      sprintf (str, "%d", va_arg (ap, int));
+	      break;
+	    case 'u':
+	      sprintf (str, "%u", va_arg (ap, unsigned int));
+	      break;
+	    case 'x':
+	      sprintf (str, "%x", va_arg (ap, unsigned int));
+	      break;
+	    case 'o':
+	      sprintf (str, "%o", va_arg (ap, unsigned int));
+	      break;
+	    default:
+	      str = 0;
+	      break;
+	    }
+	  
+	  if (str)
+	    {
+	      buffer_grow (buffer, prev, f - prev - 1);
+	      p = xml_escape_text (str);
+	      buffer_grow_str (buffer, p);
+	      xfree (p);
+	      prev = f + 1;
+	    }
+	  percent = 0;
+	}
+      else if (*f == '%')
+	percent = 1;
+    }
+
+  buffer_grow_str (buffer, prev);
+  va_end (ap);
+}
+
diff --git a/gdb/common/buffer.h b/gdb/common/buffer.h
new file mode 100644
index 00000000000..84a9caab734
--- /dev/null
+++ b/gdb/common/buffer.h
@@ -0,0 +1,63 @@
+/* A simple growing buffer for GDB.
+  
+   Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef BUFFER_H
+#define BUFFER_H
+
+#include <stddef.h>
+#include <string.h>
+#include "ansidecl.h"
+
+struct buffer
+{
+  char *buffer;
+  size_t buffer_size; /* allocated size */
+  size_t used_size; /* actually used size */
+};
+
+/* Append DATA of size SIZE to the end of BUFFER.  Grows the buffer to
+   accommodate the new data.  */
+void buffer_grow (struct buffer *buffer, const char *data, size_t size);
+
+/* Release any memory held by BUFFER.  */
+void buffer_free (struct buffer *buffer);
+
+/* Initialize BUFFER.  BUFFER holds no memory afterwards.  */
+void buffer_init (struct buffer *buffer);
+
+/* Return a pointer into BUFFER data, effectivelly transfering
+   ownership of the buffer memory to the caller.  Calling buffer_free
+   afterwards has no effect on the returned data.  */
+char* buffer_finish (struct buffer *buffer);
+
+/* Simple printf to buffer function.  Current implemented formatters:
+   %s - grow an xml escaped text in BUFFER.
+   %d - grow an signed integer in BUFFER.
+   %u - grow an unsigned integer in BUFFER.
+   %x - grow an unsigned integer formatted in hexadecimal in BUFFER.
+   %o - grow an unsigned integer formatted in octal in BUFFER.  */
+void buffer_xml_printf (struct buffer *buffer, const char *format, ...)
+  ATTRIBUTE_PRINTF (2, 3);
+
+#define buffer_grow_str(BUFFER,STRING)		\
+  buffer_grow (BUFFER, STRING, strlen (STRING))
+#define buffer_grow_str0(BUFFER,STRING)			\
+  buffer_grow (BUFFER, STRING, strlen (STRING) + 1)
+
+#endif
diff --git a/gdb/common/common-utils.c b/gdb/common/common-utils.c
new file mode 100644
index 00000000000..198b21c76b2
--- /dev/null
+++ b/gdb/common/common-utils.c
@@ -0,0 +1,170 @@
+/* Shared general utility routines for GDB, the GNU debugger.
+
+   Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+   1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+   2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef GDBSERVER
+#include "server.h"
+#else
+#include "defs.h"
+#endif
+
+#include "gdb_assert.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+/* The xmalloc() (libiberty.h) family of memory management routines.
+
+   These are like the ISO-C malloc() family except that they implement
+   consistent semantics and guard against typical memory management
+   problems.  */
+
+/* NOTE: These are declared using PTR to ensure consistency with
+   "libiberty.h".  xfree() is GDB local.  */
+
+PTR                            /* ARI: PTR */
+xmalloc (size_t size)
+{
+  void *val;
+
+  /* See libiberty/xmalloc.c.  This function need's to match that's
+     semantics.  It never returns NULL.  */
+  if (size == 0)
+    size = 1;
+
+  val = malloc (size);         /* ARI: malloc */
+  if (val == NULL)
+    malloc_failure (size);
+
+  return val;
+}
+
+PTR                              /* ARI: PTR */
+xrealloc (PTR ptr, size_t size)          /* ARI: PTR */
+{
+  void *val;
+
+  /* See libiberty/xmalloc.c.  This function need's to match that's
+     semantics.  It never returns NULL.  */
+  if (size == 0)
+    size = 1;
+
+  if (ptr != NULL)
+    val = realloc (ptr, size);	/* ARI: realloc */
+  else
+    val = malloc (size);	        /* ARI: malloc */
+  if (val == NULL)
+    malloc_failure (size);
+
+  return val;
+}
+
+PTR                            /* ARI: PTR */           
+xcalloc (size_t number, size_t size)
+{
+  void *mem;
+
+  /* See libiberty/xmalloc.c.  This function need's to match that's
+     semantics.  It never returns NULL.  */
+  if (number == 0 || size == 0)
+    {
+      number = 1;
+      size = 1;
+    }
+
+  mem = calloc (number, size);      /* ARI: xcalloc */
+  if (mem == NULL)
+    malloc_failure (number * size);
+
+  return mem;
+}
+
+void *
+xzalloc (size_t size)
+{
+  return xcalloc (1, size);
+}
+
+void
+xfree (void *ptr)
+{
+  if (ptr != NULL)
+    free (ptr);		/* ARI: free */
+}
+
+/* Like asprintf/vasprintf but get an internal_error if the call
+   fails. */
+
+char *
+xstrprintf (const char *format, ...)
+{
+  char *ret;
+  va_list args;
+
+  va_start (args, format);
+  ret = xstrvprintf (format, args);
+  va_end (args);
+  return ret;
+}
+
+char *
+xstrvprintf (const char *format, va_list ap)
+{
+  char *ret = NULL;
+  int status = vasprintf (&ret, format, ap);
+
+  /* NULL is returned when there was a memory allocation problem, or
+     any other error (for instance, a bad format string).  A negative
+     status (the printed length) with a non-NULL buffer should never
+     happen, but just to be sure.  */
+  if (ret == NULL || status < 0)
+    internal_error (__FILE__, __LINE__, _("vasprintf call failed"));
+  return ret;
+}
+
+void
+xasprintf (char **ret, const char *format, ...)
+{
+  va_list args;
+
+  va_start (args, format);
+  (*ret) = xstrvprintf (format, args);
+  va_end (args);
+}
+
+void
+xvasprintf (char **ret, const char *format, va_list ap)
+{
+  (*ret) = xstrvprintf (format, ap);
+}
+
+int
+xsnprintf (char *str, size_t size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = vsnprintf (str, size, format, args);
+  gdb_assert (ret < size);
+  va_end (args);
+
+  return ret;
+}
diff --git a/gdb/common/common-utils.h b/gdb/common/common-utils.h
new file mode 100644
index 00000000000..a49e201dd87
--- /dev/null
+++ b/gdb/common/common-utils.h
@@ -0,0 +1,59 @@
+/* Shared general utility routines for GDB, the GNU debugger.
+
+   Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+   1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+   2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef COMMON_UTILS_H
+#define COMMON_UTILS_H
+
+#include "config.h"
+#include "ansidecl.h"
+#include <stddef.h>
+#include <stdarg.h>
+
+extern void malloc_failure (long size) ATTRIBUTE_NORETURN;
+extern void internal_error (const char *file, int line, const char *, ...)
+     ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (3, 4);
+
+/* xmalloc(), xrealloc() and xcalloc() have already been declared in
+   "libiberty.h". */
+
+/* Like xmalloc, but zero the memory.  */
+void *xzalloc (size_t);
+
+void xfree (void *);
+
+/* Like asprintf and vasprintf, but return the string, throw an error
+   if no memory.  */
+char *xstrprintf (const char *format, ...) ATTRIBUTE_PRINTF (1, 2);
+char *xstrvprintf (const char *format, va_list ap)
+     ATTRIBUTE_PRINTF (1, 0);
+
+/* Like asprintf/vasprintf but get an internal_error if the call
+   fails.  */
+void xasprintf (char **ret, const char *format, ...)
+     ATTRIBUTE_PRINTF (2, 3);
+void xvasprintf (char **ret, const char *format, va_list ap)
+     ATTRIBUTE_PRINTF (2, 0);
+
+/* Like snprintf, but throw an error if the output buffer is too small.  */
+int xsnprintf (char *str, size_t size, const char *format, ...)
+     ATTRIBUTE_PRINTF (3, 4);
+
+#endif
diff --git a/gdb/gdb_assert.h b/gdb/common/gdb_assert.h
index 634049e8038..634049e8038 100644
--- a/gdb/gdb_assert.h
+++ b/gdb/common/gdb_assert.h
diff --git a/gdb/gdb_dirent.h b/gdb/common/gdb_dirent.h
index 5d226036ed4..5d226036ed4 100644
--- a/gdb/gdb_dirent.h
+++ b/gdb/common/gdb_dirent.h
diff --git a/gdb/gdb_locale.h b/gdb/common/gdb_locale.h
index 93f2f8c7c20..93f2f8c7c20 100644
--- a/gdb/gdb_locale.h
+++ b/gdb/common/gdb_locale.h
diff --git a/gdb/common/linux-osdata.c b/gdb/common/linux-osdata.c
new file mode 100644
index 00000000000..78659d4d947
--- /dev/null
+++ b/gdb/common/linux-osdata.c
@@ -0,0 +1,586 @@
+/* Linux-specific functions to retrieve OS data.
+   
+   Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef GDBSERVER
+#include "server.h"
+#else
+#include "defs.h"
+#endif
+
+#include "linux-osdata.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <utmp.h>
+#include <time.h>
+#include <unistd.h>
+#include <pwd.h>
+#include <grp.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include "xml-utils.h"
+#include "buffer.h"
+#include "gdb_assert.h"
+#include "gdb_dirent.h"
+
+int
+linux_common_core_of_thread (ptid_t ptid)
+{
+  char filename[sizeof ("/proc//task//stat")
+		 + 2 * 20 /* decimal digits for 2 numbers, max 2^64 bit each */
+		 + 1];
+  FILE *f;
+  char *content = NULL;
+  char *p;
+  char *ts = 0;
+  int content_read = 0;
+  int i;
+  int core;
+
+  sprintf (filename, "/proc/%d/task/%ld/stat",
+	   ptid_get_pid (ptid), ptid_get_lwp (ptid));
+  f = fopen (filename, "r");
+  if (!f)
+    return -1;
+
+  for (;;)
+    {
+      int n;
+      content = xrealloc (content, content_read + 1024);
+      n = fread (content + content_read, 1, 1024, f);
+      content_read += n;
+      if (n < 1024)
+	{
+	  content[content_read] = '\0';
+	  break;
+	}
+    }
+
+  p = strchr (content, '(');
+
+  /* Skip ")".  */
+  if (p != NULL)
+    p = strchr (p, ')');
+  if (p != NULL)
+    p++;
+
+  /* If the first field after program name has index 0, then core number is
+     the field with index 36.  There's no constant for that anywhere.  */
+  if (p != NULL)
+    p = strtok_r (p, " ", &ts);
+  for (i = 0; p != NULL && i != 36; ++i)
+    p = strtok_r (NULL, " ", &ts);
+
+  if (p == NULL || sscanf (p, "%d", &core) == 0)
+    core = -1;
+
+  xfree (content);
+  fclose (f);
+
+  return core;
+}
+
+static void
+command_from_pid (char *command, int maxlen, pid_t pid)
+{
+  char *stat_path = xstrprintf ("/proc/%d/stat", pid); 
+  FILE *fp = fopen (stat_path, "r");
+  
+  command[0] = '\0';
+ 
+  if (fp)
+    {
+      /* sizeof (cmd) should be greater or equal to TASK_COMM_LEN (in
+	 include/linux/sched.h in the Linux kernel sources) plus two
+	 (for the brackets).  */
+      char cmd[32]; 
+      pid_t stat_pid;
+      int items_read = fscanf (fp, "%d %32s", &stat_pid, cmd);
+	  
+      if (items_read == 2 && pid == stat_pid)
+	{
+	  cmd[strlen (cmd) - 1] = '\0'; /* Remove trailing parenthesis.  */
+	  strncpy (command, cmd + 1, maxlen); /* Ignore leading parenthesis.  */
+	}
+
+      fclose (fp);
+    }
+  else
+    {
+      /* Return the PID if a /proc entry for the process cannot be found.  */
+      snprintf (command, maxlen, "%d", pid);
+    }
+
+  command[maxlen - 1] = '\0'; /* Ensure string is null-terminated.  */
+	
+  xfree (stat_path);
+}
+
+/* Returns the command-line of the process with the given PID. The returned
+   string needs to be freed using xfree after use.  */
+
+static char *
+commandline_from_pid (pid_t pid)
+{
+  char *pathname = xstrprintf ("/proc/%d/cmdline", pid);
+  char *commandline = NULL;
+  FILE *f = fopen (pathname, "r");
+
+  if (f)
+    {
+      size_t len = 0;
+
+      while (!feof (f))
+	{
+	  char buf[1024];
+	  size_t read_bytes = fread (buf, 1, sizeof (buf), f);
+     
+	  if (read_bytes)
+	    {
+	      commandline = (char *) xrealloc (commandline, len + read_bytes + 1);
+	      memcpy (commandline + len, buf, read_bytes);
+	      len += read_bytes;
+	    }
+	}
+
+      fclose (f);
+
+      if (commandline)
+	{
+	  size_t i;
+
+	  /* Replace null characters with spaces.  */
+	  for (i = 0; i < len; ++i)
+	    if (commandline[i] == '\0')
+	      commandline[i] = ' ';
+
+	  commandline[len] = '\0';
+	}
+      else
+	{
+	  /* Return the command in square brackets if the command-line is empty.  */
+	  commandline = (char *) xmalloc (32);
+	  commandline[0] = '[';
+	  command_from_pid (commandline + 1, 31, pid);
+
+	  len = strlen (commandline);
+	  if (len < 31)
+	    strcat (commandline, "]");
+	}
+    }
+
+  xfree (pathname);
+
+  return commandline;
+}
+
+static void
+user_from_uid (char *user, int maxlen, uid_t uid)
+{
+  struct passwd *pwentry = getpwuid (uid);
+  
+  if (pwentry)
+    {
+      strncpy (user, pwentry->pw_name, maxlen);
+      user[maxlen - 1] = '\0'; /* Ensure that the user name is null-terminated.  */
+    }
+  else
+    user[0] = '\0';
+}
+
+static int
+get_process_owner (uid_t *owner, pid_t pid)
+{
+  struct stat statbuf;
+  char procentry[sizeof ("/proc/4294967295")];
+
+  sprintf (procentry, "/proc/%d", pid);
+  
+  if (stat (procentry, &statbuf) == 0 && S_ISDIR (statbuf.st_mode))
+    {
+      *owner = statbuf.st_uid;
+      return 0;
+    }
+  else
+    return -1;
+}
+
+static int
+get_number_of_cpu_cores (void)
+{
+  int cores = 0;
+  FILE *f = fopen ("/proc/cpuinfo", "r");
+
+  while (!feof (f))
+    {
+      char buf[512];
+      char *p = fgets (buf, sizeof (buf), f);
+
+      if (p && strncmp (buf, "processor", 9) == 0)
+	++cores;
+    }
+
+  fclose (f);
+
+  return cores;
+}
+
+/* CORES points to an array of at least get_number_of_cpu_cores () elements.  */
+
+static int
+get_cores_used_by_process (pid_t pid, int *cores)
+{
+  char taskdir[sizeof ("/proc/4294967295/task")];
+  DIR *dir;
+  struct dirent *dp;
+  int task_count = 0;
+
+  sprintf (taskdir, "/proc/%d/task", pid);
+  dir = opendir (taskdir);
+
+  while ((dp = readdir (dir)) != NULL)
+    {
+      pid_t tid;
+      int core;
+
+      if (!isdigit (dp->d_name[0])
+	  || NAMELEN (dp) > sizeof ("4294967295") - 1)
+	continue;
+
+      tid = atoi (dp->d_name);
+      core = linux_common_core_of_thread (ptid_build (pid, tid, 0));
+
+      if (core >= 0)
+	{
+	  ++cores[core];
+	  ++task_count;
+	}
+    }
+
+  closedir (dir);
+
+  return task_count;
+}
+
+static LONGEST
+linux_xfer_osdata_processes (gdb_byte *readbuf,
+			     ULONGEST offset, LONGEST len)
+{
+  /* We make the process list snapshot when the object starts to be read.  */
+  static const char *buf;
+  static LONGEST len_avail = -1;
+  static struct buffer buffer;
+
+  if (offset == 0)
+    {
+      DIR *dirp;
+
+      if (len_avail != -1 && len_avail != 0)
+	buffer_free (&buffer);
+      len_avail = 0;
+      buf = NULL;
+      buffer_init (&buffer);
+      buffer_grow_str (&buffer, "<osdata type=\"processes\">\n");
+
+      dirp = opendir ("/proc");
+      if (dirp)
+	{
+	  const int num_cores = get_number_of_cpu_cores ();
+	  struct dirent *dp;
+
+	  while ((dp = readdir (dirp)) != NULL)
+	    {
+	      pid_t pid;
+	      uid_t owner;
+	      char user[UT_NAMESIZE];
+	      char *command_line;
+	      int *cores;
+	      int task_count;
+	      char *cores_str;
+	      int i;
+
+	      if (!isdigit (dp->d_name[0])
+		  || NAMELEN (dp) > sizeof ("4294967295") - 1)
+		continue;
+
+	      sscanf (dp->d_name, "%d", &pid);
+	      command_line = commandline_from_pid (pid);
+
+	      if (get_process_owner (&owner, pid) == 0)
+		user_from_uid (user, sizeof (user), owner);
+	      else
+		strcpy (user, "?");
+
+	      /* Find CPU cores used by the process.  */
+	      cores = (int *) xcalloc (num_cores, sizeof (int));
+	      task_count = get_cores_used_by_process (pid, cores);
+	      cores_str = (char *) xcalloc (task_count, sizeof ("4294967295") + 1);
+
+	      for (i = 0; i < num_cores && task_count > 0; ++i)
+		if (cores[i])
+		  {
+		    char core_str[sizeof ("4294967205")];
+
+		    sprintf (core_str, "%d", i);
+		    strcat (cores_str, core_str);
+
+		    task_count -= cores[i];
+		    if (task_count > 0)
+		      strcat (cores_str, ",");
+		  }
+
+	      xfree (cores);
+	      
+	      buffer_xml_printf (
+		  &buffer,
+		  "<item>"
+		  "<column name=\"pid\">%d</column>"
+		  "<column name=\"user\">%s</column>"
+		  "<column name=\"command\">%s</column>"
+		  "<column name=\"cores\">%s</column>"
+		  "</item>",
+		  pid,
+		  user,
+		  command_line ? command_line : "",
+		  cores_str);
+
+	      xfree (command_line);     
+	      xfree (cores_str);
+	    }
+	  
+	  closedir (dirp);
+	}
+
+      buffer_grow_str0 (&buffer, "</osdata>\n");
+      buf = buffer_finish (&buffer);
+      len_avail = strlen (buf);
+    }
+
+  if (offset >= len_avail)
+    {
+      /* Done.  Get rid of the buffer.  */
+      buffer_free (&buffer);
+      buf = NULL;
+      len_avail = 0;
+      return 0;
+    }
+
+  if (len > len_avail - offset)
+    len = len_avail - offset;
+  memcpy (readbuf, buf + offset, len);
+
+  return len;
+}
+
+static LONGEST
+linux_xfer_osdata_threads (gdb_byte *readbuf,
+			   ULONGEST offset, LONGEST len)
+{
+  /* We make the process list snapshot when the object starts to be read.  */
+  static const char *buf;
+  static LONGEST len_avail = -1;
+  static struct buffer buffer;
+
+  if (offset == 0)
+    {
+      DIR *dirp;
+
+      if (len_avail != -1 && len_avail != 0)
+	buffer_free (&buffer);
+      len_avail = 0;
+      buf = NULL;
+      buffer_init (&buffer);
+      buffer_grow_str (&buffer, "<osdata type=\"threads\">\n");
+
+      dirp = opendir ("/proc");
+      if (dirp)
+	{
+	  struct dirent *dp;
+
+	  while ((dp = readdir (dirp)) != NULL)
+	    {
+	      struct stat statbuf;
+	      char procentry[sizeof ("/proc/4294967295")];
+
+	      if (!isdigit (dp->d_name[0])
+		  || NAMELEN (dp) > sizeof ("4294967295") - 1)
+		continue;
+
+	      sprintf (procentry, "/proc/%s", dp->d_name);
+	      if (stat (procentry, &statbuf) == 0
+		  && S_ISDIR (statbuf.st_mode))
+		{
+		  DIR *dirp2;
+		  char *pathname;
+		  pid_t pid;
+		  char command[32];
+
+		  pathname = xstrprintf ("/proc/%s/task", dp->d_name);
+		  
+		  pid = atoi (dp->d_name);
+		  command_from_pid (command, sizeof (command), pid);
+
+		  dirp2 = opendir (pathname);
+
+		  if (dirp2)
+		    {
+		      struct dirent *dp2;
+
+		      while ((dp2 = readdir (dirp2)) != NULL)
+			{
+			  pid_t tid;
+			  int core;
+
+			  if (!isdigit (dp2->d_name[0])
+			      || NAMELEN (dp2) > sizeof ("4294967295") - 1)
+			    continue;
+
+			  tid = atoi (dp2->d_name);
+			  core = linux_common_core_of_thread (ptid_build (pid, tid, 0));
+
+			  buffer_xml_printf (
+			    &buffer,
+			    "<item>"
+			    "<column name=\"pid\">%d</column>"
+			    "<column name=\"command\">%s</column>"
+			    "<column name=\"tid\">%d</column>"
+			    "<column name=\"core\">%d</column>"
+			    "</item>",
+			    pid,
+			    command,
+			    tid,
+			    core);
+			}
+
+		      closedir (dirp2);
+		    }
+
+		  xfree (pathname);
+		}
+	    }
+
+	  closedir (dirp);
+	}
+
+      buffer_grow_str0 (&buffer, "</osdata>\n");
+      buf = buffer_finish (&buffer);
+      len_avail = strlen (buf);
+    }
+
+  if (offset >= len_avail)
+    {
+      /* Done.  Get rid of the buffer.  */
+      buffer_free (&buffer);
+      buf = NULL;
+      len_avail = 0;
+      return 0;
+    }
+
+  if (len > len_avail - offset)
+    len = len_avail - offset;
+  memcpy (readbuf, buf + offset, len);
+
+  return len;
+}
+
+struct osdata_type {
+  char *type;
+  char *description;
+  LONGEST (*getter) (gdb_byte *readbuf, ULONGEST offset, LONGEST len);
+} osdata_table[] = {
+  { "processes", "Listing of all processes", linux_xfer_osdata_processes },
+  { "threads", "Listing of all threads", linux_xfer_osdata_threads },
+  { NULL, NULL, NULL }
+};
+
+LONGEST
+linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf,
+			  ULONGEST offset, LONGEST len)
+{
+  if (!annex || *annex == '\0')
+    {
+      static const char *buf;
+      static LONGEST len_avail = -1;
+      static struct buffer buffer;
+
+      if (offset == 0)
+	{
+	  int i;
+
+	  if (len_avail != -1 && len_avail != 0)
+	    buffer_free (&buffer);
+	  len_avail = 0;
+	  buf = NULL;
+	  buffer_init (&buffer);
+	  buffer_grow_str (&buffer, "<osdata type=\"types\">\n");
+
+	  for (i = 0; osdata_table[i].type; ++i)
+	    buffer_xml_printf (
+			       &buffer,
+			       "<item>"
+			       "<column name=\"Type\">%s</column>"
+			       "<column name=\"Description\">%s</column>"
+			       "</item>",
+			       osdata_table[i].type,
+			       osdata_table[i].description);
+
+	  buffer_grow_str0 (&buffer, "</osdata>\n");
+	  buf = buffer_finish (&buffer);
+	  len_avail = strlen (buf);
+	}
+
+      if (offset >= len_avail)
+	{
+	  /* Done.  Get rid of the buffer.  */
+	  buffer_free (&buffer);
+	  buf = NULL;
+	  len_avail = 0;
+	  return 0;
+	}
+
+      if (len > len_avail - offset)
+	len = len_avail - offset;
+      memcpy (readbuf, buf + offset, len);
+
+      return len;
+    }
+  else
+    {
+      int i;
+
+      for (i = 0; osdata_table[i].type; ++i)
+	{
+	  if (strcmp (annex, osdata_table[i].type) == 0)
+	    {
+	      gdb_assert (readbuf);
+	      
+	      return (osdata_table[i].getter) (readbuf, offset, len);
+	    }
+	}
+
+      return 0;
+    }
+}
+
diff --git a/gdb/common/linux-osdata.h b/gdb/common/linux-osdata.h
new file mode 100644
index 00000000000..b8bac53995b
--- /dev/null
+++ b/gdb/common/linux-osdata.h
@@ -0,0 +1,29 @@
+/* Linux-specific functions to retrieve OS data.
+   
+   Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef COMMON_LINUX_OSDATA_H
+#define COMMON_LINUX_OSDATA_H
+
+#include "ptid.h"
+
+extern int linux_common_core_of_thread (ptid_t ptid);
+extern LONGEST linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf,
+					 ULONGEST offset, LONGEST len);
+
+#endif
diff --git a/gdb/common/ptid.c b/gdb/common/ptid.c
new file mode 100644
index 00000000000..389d2b34d7f
--- /dev/null
+++ b/gdb/common/ptid.c
@@ -0,0 +1,94 @@
+/* The ptid_t type and common functions operating on it.
+
+   Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+   1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+   2009, 2010, 2011 Free Software Foundation, Inc.
+   
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "ptid.h"
+
+/* Oft used ptids */
+ptid_t null_ptid = { 0, 0, 0 };
+ptid_t minus_one_ptid = { -1, 0, 0 };
+
+/* Create a ptid given the necessary PID, LWP, and TID components.  */
+
+ptid_t
+ptid_build (int pid, long lwp, long tid)
+{
+  ptid_t ptid;
+
+  ptid.pid = pid;
+  ptid.lwp = lwp;
+  ptid.tid = tid;
+  return ptid;
+}
+
+/* Create a ptid from just a pid.  */
+
+ptid_t
+pid_to_ptid (int pid)
+{
+  return ptid_build (pid, 0, 0);
+}
+
+/* Fetch the pid (process id) component from a ptid.  */
+
+int
+ptid_get_pid (ptid_t ptid)
+{
+  return ptid.pid;
+}
+
+/* Fetch the lwp (lightweight process) component from a ptid.  */
+
+long
+ptid_get_lwp (ptid_t ptid)
+{
+  return ptid.lwp;
+}
+
+/* Fetch the tid (thread id) component from a ptid.  */
+
+long
+ptid_get_tid (ptid_t ptid)
+{
+  return ptid.tid;
+}
+
+/* ptid_equal() is used to test equality of two ptids.  */
+
+int
+ptid_equal (ptid_t ptid1, ptid_t ptid2)
+{
+  return (ptid1.pid == ptid2.pid
+	  && ptid1.lwp == ptid2.lwp
+	  && ptid1.tid == ptid2.tid);
+}
+
+/* Returns true if PTID represents a process.  */
+
+int
+ptid_is_pid (ptid_t ptid)
+{
+  if (ptid_equal (minus_one_ptid, ptid))
+    return 0;
+  if (ptid_equal (null_ptid, ptid))
+    return 0;
+
+  return (ptid_get_lwp (ptid) == 0 && ptid_get_tid (ptid) == 0);
+}
diff --git a/gdb/common/ptid.h b/gdb/common/ptid.h
new file mode 100644
index 00000000000..e750a81bc1d
--- /dev/null
+++ b/gdb/common/ptid.h
@@ -0,0 +1,87 @@
+/* The ptid_t type and common functions operating on it.
+
+   Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+   1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+   2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef PTID_H
+#define PTID_H
+
+/* The ptid struct is a collection of the various "ids" necessary
+   for identifying the inferior.  This consists of the process id
+   (pid), thread id (tid), and other fields necessary for uniquely
+   identifying the inferior process/thread being debugged.  When
+   manipulating ptids, the constructors, accessors, and predicate
+   declared in server.h should be used.  These are as follows:
+
+      ptid_build	- Make a new ptid from a pid, lwp, and tid.
+      pid_to_ptid	- Make a new ptid from just a pid.
+      ptid_get_pid	- Fetch the pid component of a ptid.
+      ptid_get_lwp	- Fetch the lwp component of a ptid.
+      ptid_get_tid	- Fetch the tid component of a ptid.
+      ptid_equal	- Test to see if two ptids are equal.
+
+   Please do NOT access the struct ptid members directly (except, of
+   course, in the implementation of the above ptid manipulation
+   functions).  */
+
+struct ptid
+  {
+    /* Process id */
+    int pid;
+
+    /* Lightweight process id */
+    long lwp;
+
+    /* Thread id */
+    long tid;
+  };
+
+typedef struct ptid ptid_t;
+
+/* The null or zero ptid, often used to indicate no process. */
+extern ptid_t null_ptid;
+
+/* The -1 ptid, often used to indicate either an error condition
+   or a "don't care" condition, i.e, "run all threads."  */
+extern ptid_t minus_one_ptid;
+
+/* Attempt to find and return an existing ptid with the given PID, LWP,
+   and TID components.  If none exists, create a new one and return
+   that.  */
+ptid_t ptid_build (int pid, long lwp, long tid);
+
+/* Find/Create a ptid from just a pid. */
+ptid_t pid_to_ptid (int pid);
+
+/* Fetch the pid (process id) component from a ptid. */
+int ptid_get_pid (ptid_t ptid);
+
+/* Fetch the lwp (lightweight process) component from a ptid. */
+long ptid_get_lwp (ptid_t ptid);
+
+/* Fetch the tid (thread id) component from a ptid. */
+long ptid_get_tid (ptid_t ptid);
+
+/* Compare two ptids to see if they are equal */
+int ptid_equal (ptid_t p1, ptid_t p2);
+
+/* Return true if PTID represents a process id.  */
+int ptid_is_pid (ptid_t ptid);
+
+#endif
diff --git a/gdb/common/xml-utils.c b/gdb/common/xml-utils.c
new file mode 100644
index 00000000000..1d0057fb7df
--- /dev/null
+++ b/gdb/common/xml-utils.c
@@ -0,0 +1,91 @@
+/* Shared helper routines for manipulating XML.
+
+   Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef GDBSERVER
+#include "server.h"
+#else
+#include "defs.h"
+#endif
+
+#include "xml-utils.h"
+
+#include <string.h>
+
+/* Return a malloc allocated string with special characters from TEXT
+   replaced by entity references.  */
+
+char *
+xml_escape_text (const char *text)
+{
+  char *result;
+  int i, special;
+
+  /* Compute the length of the result.  */
+  for (i = 0, special = 0; text[i] != '\0'; i++)
+    switch (text[i])
+      {
+      case '\'':
+      case '\"':
+	special += 5;
+	break;
+      case '&':
+	special += 4;
+	break;
+      case '<':
+      case '>':
+	special += 3;
+	break;
+      default:
+	break;
+      }
+
+  /* Expand the result.  */
+  result = xmalloc (i + special + 1);
+  for (i = 0, special = 0; text[i] != '\0'; i++)
+    switch (text[i])
+      {
+      case '\'':
+	strcpy (result + i + special, "&apos;");
+	special += 5;
+	break;
+      case '\"':
+	strcpy (result + i + special, "&quot;");
+	special += 5;
+	break;
+      case '&':
+	strcpy (result + i + special, "&amp;");
+	special += 4;
+	break;
+      case '<':
+	strcpy (result + i + special, "&lt;");
+	special += 3;
+	break;
+      case '>':
+	strcpy (result + i + special, "&gt;");
+	special += 3;
+	break;
+      default:
+	result[i + special] = text[i];
+	break;
+      }
+  result[i + special] = '\0';
+
+  return result;
+}
diff --git a/gdb/common/xml-utils.h b/gdb/common/xml-utils.h
new file mode 100644
index 00000000000..f4d903ee7e9
--- /dev/null
+++ b/gdb/common/xml-utils.h
@@ -0,0 +1,29 @@
+/* Shared helper routines for manipulating XML.
+
+   Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef XML_UTILS_H
+#define XML_UTILS_H
+
+/* Return a malloc allocated string with special characters from TEXT
+   replaced by entity references.  */
+
+extern char *xml_escape_text (const char *text);
+
+#endif
diff --git a/gdb/config/alpha/alpha-linux.mh b/gdb/config/alpha/alpha-linux.mh
index 5074f1e0fb9..1a6949d8bb0 100644
--- a/gdb/config/alpha/alpha-linux.mh
+++ b/gdb/config/alpha/alpha-linux.mh
@@ -2,7 +2,7 @@
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o corelow.o alpha-linux-nat.o \
 	fork-child.o proc-service.o linux-thread-db.o \
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 # The dynamically loaded libthread_db needs access to symbols in the
diff --git a/gdb/config/arm/linux.mh b/gdb/config/arm/linux.mh
index aa6d08ab22e..c5e93f3cbc6 100644
--- a/gdb/config/arm/linux.mh
+++ b/gdb/config/arm/linux.mh
@@ -2,7 +2,8 @@
 
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o arm-linux-nat.o \
-	proc-service.o linux-thread-db.o linux-nat.o linux-fork.o
+	proc-service.o linux-thread-db.o \
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 LOADLIBES= -ldl $(RDYNAMIC)
diff --git a/gdb/config/i386/linux.mh b/gdb/config/i386/linux.mh
index 5590f578771..3d7745bb5d0 100644
--- a/gdb/config/i386/linux.mh
+++ b/gdb/config/i386/linux.mh
@@ -4,7 +4,7 @@ NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	i386-nat.o i386-linux-nat.o \
 	proc-service.o linux-thread-db.o \
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 # The dynamically loaded libthread_db needs access to symbols in the
diff --git a/gdb/config/i386/linux64.mh b/gdb/config/i386/linux64.mh
index 3e593009946..c826dc9ab67 100644
--- a/gdb/config/i386/linux64.mh
+++ b/gdb/config/i386/linux64.mh
@@ -1,6 +1,7 @@
 # Host: GNU/Linux x86-64
 NATDEPFILES= inf-ptrace.o fork-child.o \
-	i386-nat.o amd64-nat.o amd64-linux-nat.o linux-nat.o \
+	i386-nat.o amd64-nat.o amd64-linux-nat.o \
+	linux-nat.o linux-osdata.o \
 	proc-service.o linux-thread-db.o linux-fork.o
 NAT_FILE= config/nm-linux.h
 NAT_CDEPS = $(srcdir)/proc-service.list
diff --git a/gdb/config/ia64/linux.mh b/gdb/config/ia64/linux.mh
index a069b5b0a21..df45b974392 100644
--- a/gdb/config/ia64/linux.mh
+++ b/gdb/config/ia64/linux.mh
@@ -3,7 +3,8 @@
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o \
 	core-regset.o ia64-linux-nat.o \
-	proc-service.o linux-thread-db.o linux-nat.o linux-fork.o
+	proc-service.o linux-thread-db.o \
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 LOADLIBES = -ldl $(RDYNAMIC)
diff --git a/gdb/config/m32r/linux.mh b/gdb/config/m32r/linux.mh
index b3f1c5f447d..241520d198f 100644
--- a/gdb/config/m32r/linux.mh
+++ b/gdb/config/m32r/linux.mh
@@ -3,7 +3,7 @@
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o	\
 	m32r-linux-nat.o proc-service.o linux-thread-db.o	\
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 LOADLIBES= -ldl $(RDYNAMIC)
diff --git a/gdb/config/m68k/linux.mh b/gdb/config/m68k/linux.mh
index 4a95208301c..b54921c533e 100644
--- a/gdb/config/m68k/linux.mh
+++ b/gdb/config/m68k/linux.mh
@@ -3,7 +3,8 @@
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	corelow.o m68klinux-nat.o \
-	proc-service.o linux-thread-db.o linux-nat.o linux-fork.o
+	proc-service.o linux-thread-db.o \
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 # The dynamically loaded libthread_db needs access to symbols in the
diff --git a/gdb/config/mips/linux.mh b/gdb/config/mips/linux.mh
index 5e9dbb66858..4f735ba6e43 100644
--- a/gdb/config/mips/linux.mh
+++ b/gdb/config/mips/linux.mh
@@ -2,7 +2,7 @@
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o mips-linux-nat.o \
 	linux-thread-db.o proc-service.o \
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 LOADLIBES = -ldl $(RDYNAMIC)
diff --git a/gdb/config/pa/linux.mh b/gdb/config/pa/linux.mh
index 293964fba26..e49c91e2233 100644
--- a/gdb/config/pa/linux.mh
+++ b/gdb/config/pa/linux.mh
@@ -1,8 +1,8 @@
 # Host: Hewlett-Packard PA-RISC machine, running Linux
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o \
-	hppa-linux-nat.o proc-service.o linux-thread-db.o linux-nat.o \
-	linux-fork.o
+	hppa-linux-nat.o proc-service.o linux-thread-db.o \
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 LOADLIBES = -ldl $(RDYNAMIC)
diff --git a/gdb/config/powerpc/linux.mh b/gdb/config/powerpc/linux.mh
index 501f2d670a8..49fac1d5c12 100644
--- a/gdb/config/powerpc/linux.mh
+++ b/gdb/config/powerpc/linux.mh
@@ -5,7 +5,7 @@ XM_CLIBS=
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	ppc-linux-nat.o proc-service.o linux-thread-db.o \
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 LOADLIBES = -ldl $(RDYNAMIC)
diff --git a/gdb/config/powerpc/ppc64-linux.mh b/gdb/config/powerpc/ppc64-linux.mh
index 5675fdca378..c822e83e731 100644
--- a/gdb/config/powerpc/ppc64-linux.mh
+++ b/gdb/config/powerpc/ppc64-linux.mh
@@ -5,7 +5,7 @@ XM_CLIBS=
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	ppc-linux-nat.o proc-service.o linux-thread-db.o \
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 # The PowerPC has severe limitations on TOC size, and uses them even
diff --git a/gdb/config/s390/s390.mh b/gdb/config/s390/s390.mh
index 9e62904efff..499203503ff 100644
--- a/gdb/config/s390/s390.mh
+++ b/gdb/config/s390/s390.mh
@@ -1,6 +1,7 @@
 # Host: S390, running Linux
 NAT_FILE= config/nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o s390-nat.o \
-	linux-thread-db.o proc-service.o linux-nat.o linux-fork.o
+	linux-thread-db.o proc-service.o \
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 LOADLIBES = -ldl $(RDYNAMIC)
diff --git a/gdb/config/sparc/linux.mh b/gdb/config/sparc/linux.mh
index 32d1b6abb54..fe8e1e71285 100644
--- a/gdb/config/sparc/linux.mh
+++ b/gdb/config/sparc/linux.mh
@@ -3,7 +3,7 @@ NAT_FILE= config/nm-linux.h
 NATDEPFILES= sparc-nat.o sparc-linux-nat.o \
 	corelow.o core-regset.o fork-child.o inf-ptrace.o \
 	proc-service.o linux-thread-db.o \
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 # The dynamically loaded libthread_db needs access to symbols in the
diff --git a/gdb/config/sparc/linux64.mh b/gdb/config/sparc/linux64.mh
index b54c3b76cba..639e3d0150e 100644
--- a/gdb/config/sparc/linux64.mh
+++ b/gdb/config/sparc/linux64.mh
@@ -4,7 +4,7 @@ NATDEPFILES= sparc-nat.o sparc64-nat.o sparc64-linux-nat.o \
 	corelow.o core-regset.o \
 	fork-child.o inf-ptrace.o \
 	proc-service.o linux-thread-db.o \
-	linux-nat.o linux-fork.o
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 # The dynamically loaded libthread_db needs access to symbols in the
diff --git a/gdb/config/xtensa/linux.mh b/gdb/config/xtensa/linux.mh
index c83eac0e162..4abd242f004 100644
--- a/gdb/config/xtensa/linux.mh
+++ b/gdb/config/xtensa/linux.mh
@@ -3,7 +3,8 @@
 NAT_FILE= config/nm-linux.h
 
 NATDEPFILES= inf-ptrace.o fork-child.o xtensa-linux-nat.o \
-	linux-thread-db.o proc-service.o linux-nat.o linux-fork.o
+	linux-thread-db.o proc-service.o \
+	linux-nat.o linux-osdata.o linux-fork.o
 NAT_CDEPS = $(srcdir)/proc-service.list
 
 LOADLIBES = -ldl $(RDYNAMIC)
diff --git a/gdb/defs.h b/gdb/defs.h
index 71b7cd291d6..eaf9c2a5f37 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -23,6 +23,10 @@
 #ifndef DEFS_H
 #define DEFS_H
 
+#ifdef GDBSERVER
+#  error gdbserver should not include gdb/defs.h
+#endif
+
 #include "config.h"		/* Generated by configure.  */
 
 #include <sys/types.h>
@@ -142,6 +146,8 @@ typedef bfd_vma CORE_ADDR;
 #define max(a, b) ((a) > (b) ? (a) : (b))
 #endif
 
+#include "ptid.h"
+
 /* Check if a character is one of the commonly used C++ marker characters.  */
 extern int is_cplus_marker (int);
 
@@ -753,41 +759,6 @@ enum val_prettyprint
     Val_pretty_default
   };
 
-/* The ptid struct is a collection of the various "ids" necessary
-   for identifying the inferior.  This consists of the process id
-   (pid), thread id (tid), and other fields necessary for uniquely
-   identifying the inferior process/thread being debugged.  When
-   manipulating ptids, the constructors, accessors, and predicate
-   declared in inferior.h should be used.  These are as follows:
-
-      ptid_build	- Make a new ptid from a pid, lwp, and tid.
-      pid_to_ptid	- Make a new ptid from just a pid.
-      ptid_get_pid	- Fetch the pid component of a ptid.
-      ptid_get_lwp	- Fetch the lwp component of a ptid.
-      ptid_get_tid	- Fetch the tid component of a ptid.
-      ptid_equal	- Test to see if two ptids are equal.
-      ptid_is_pid	- Test to see if this ptid represents a process id.
-
-   Please do NOT access the struct ptid members directly (except, of
-   course, in the implementation of the above ptid manipulation
-   functions).  */
-
-struct ptid
-  {
-    /* Process id */
-    int pid;
-
-    /* Lightweight process id */
-    long lwp;
-
-    /* Thread id */
-    long tid;
-  };
-
-typedef struct ptid ptid_t;
-
-
-
 /* Optional native machine support.  Non-native (and possibly pure
    multi-arch) targets do not need a "nm.h" file.  This will be a
    symlink to one of the nm-*.h files, built by the `configure'
@@ -851,13 +822,6 @@ extern int longest_to_int (LONGEST);
 
 extern char *savestring (const char *, size_t);
 
-/* xmalloc(), xrealloc() and xcalloc() have already been declared in
-   "libiberty.h".  */
-extern void xfree (void *);
-
-/* Like xmalloc, but zero the memory.  */
-extern void *xzalloc (size_t);
-
 /* Utility macros to allocate typed memory.  Avoids errors like:
    struct foo *foo = xmalloc (sizeof struct bar); and memset (foo,
    sizeof (struct foo), 0).  */
@@ -865,22 +829,7 @@ extern void *xzalloc (size_t);
 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
 #define XCALLOC(NMEMB, TYPE) ((TYPE*) xcalloc ((NMEMB), sizeof (TYPE)))
 
-/* Like asprintf/vasprintf but get an internal_error if the call
-   fails.  */
-extern void xasprintf (char **ret, const char *format, ...)
-     ATTRIBUTE_PRINTF (2, 3);
-extern void xvasprintf (char **ret, const char *format, va_list ap)
-     ATTRIBUTE_PRINTF (2, 0);
-
-/* Like asprintf and vasprintf, but return the string, throw an error
-   if no memory.  */
-extern char *xstrprintf (const char *format, ...) ATTRIBUTE_PRINTF (1, 2);
-extern char *xstrvprintf (const char *format, va_list ap)
-     ATTRIBUTE_PRINTF (1, 0);
-
-/* Like snprintf, but throw an error if the output buffer is too small.  */
-extern int xsnprintf (char *str, size_t size, const char *format, ...)
-     ATTRIBUTE_PRINTF (3, 4);
+#include "common-utils.h"
 
 extern int parse_escape (struct gdbarch *, char **);
 
@@ -914,9 +863,6 @@ extern void internal_verror (const char *file, int line, const char *,
 			     va_list ap)
      ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (3, 0);
 
-extern void internal_error (const char *file, int line, const char *, ...)
-     ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (3, 4);
-
 extern void internal_vwarning (const char *file, int line,
 			       const char *, va_list ap)
      ATTRIBUTE_PRINTF (3, 0);
@@ -924,8 +870,6 @@ extern void internal_vwarning (const char *file, int line,
 extern void internal_warning (const char *file, int line,
 			      const char *, ...) ATTRIBUTE_PRINTF (3, 4);
 
-extern void nomem (long) ATTRIBUTE_NORETURN;
-
 extern void warning (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 
 extern void vwarning (const char *, va_list args) ATTRIBUTE_PRINTF (1, 0);
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 5926a790e02..d0a914faaca 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,42 @@
+2011-07-22  Kwok Cheung Yeung  <kcy@codesourcery.com>
+
+	* linux-low.c (compare_ints, unique, list_threads, show_process,
+	linux_core_of_thread): Delete.
+	(linux_target_ops): Change linux_core_of_thread to
+	linux_common_core_of_thread.
+	(linux_qxfer_osdata): Defer to linux_common_xfer_osdata.
+	* utils.c (malloc_failure): Change type of argument.
+	(xmalloc, xrealloc, xcalloc, xsnprintf): Delete.
+	* Makefile.in (SFILES): Add common/common-utils.c, common/xml-utils.c,
+	common/linux-osdata.c, common/ptid.c and common/buffer.c.
+	(OBS): Add xml-utils.o, common-utils.o, ptid.o and buffer.o.
+	(IPA_OBJS): Add common-utils-ipa.o.
+	(ptid_h, linux_osdata_h): New macros.
+	(server_h): Add common/common-utils.h, common/xml-utils.h,
+	common/buffer.h, common/gdb_assert.h, common/gdb_locale.h and
+	common/ptid.h.
+	(common-utils-ipa.o, common-utils.o, xml-utils.o, linux-osdata.o,
+	ptid.o, buffer.o): New rules.
+	(linux-low.o): Add common/linux-osdata.h as a dependency.
+	* configure.srv (srv_tgtobj): Add linux-osdata.o to Linux targets.
+	* configure.ac: Add AC_HEADER_DIRENT check.
+	* config.in: Regenerate.
+	* configure: Regenerate.
+	* remote-utils.c (xml_escape_text): Delete.
+	(buffer_grow, buffer_free, buffer_init, buffer_finish,
+	buffer_xml_printf): Move to common/buffer.c.
+	* server.c (main): Remove call to initialize_inferiors.
+	* server.h (struct ptid, ptid_t, minus_one_ptid, null_ptid,
+	ptid_build, pid_to_ptid, ptid_get_pid, ptid_get_lwp, ptid_get_tid,
+	ptid_equal, ptid_is_pid, initialize_inferiors, xml_escape_text,
+	internal_error, gdb_assert, gdb_assert_fail): Delete.
+	(struct buffer, buffer_grow, buffer_free, buffer_init, buffer_finish,
+	buffer_xml_printf, buffer_grow_str, buffer_grow_str0): Move to
+	common/buffer.h.
+	* inferiors.c (null_ptid, minus_one_ptid, ptid_build, pid_to_ptid,
+	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal, ptid_is_pid,
+	initialize_inferiors): Delete.
+
 2011-07-20  Pedro Alves  <pedro@codesourcery.com>
 
 	* tracepoint.c (tracepoint_look_up_symbols): Return upon the first
diff --git a/gdb/gdbserver/Makefile.in b/gdb/gdbserver/Makefile.in
index 095c706c80b..079721d98a3 100644
--- a/gdb/gdbserver/Makefile.in
+++ b/gdb/gdbserver/Makefile.in
@@ -124,7 +124,10 @@ SFILES=	$(srcdir)/gdbreplay.c $(srcdir)/inferiors.c \
 	$(srcdir)/linux-xtensa-low.c \
 	$(srcdir)/win32-arm-low.c $(srcdir)/win32-i386-low.c \
 	$(srcdir)/win32-low.c $(srcdir)/wincecompat.c \
-	$(srcdir)/hostio.c $(srcdir)/hostio-errno.c
+	$(srcdir)/hostio.c $(srcdir)/hostio-errno.c \
+	$(srcdir)/common/common-utils.c $(srcdir)/common/xml-utils.c \
+	$(srcdir)/common/linux-osdata.c $(srcdir)/common/ptid.c \
+	$(srcdir)/common/buffer.c
 
 DEPFILES = @GDBSERVER_DEPFILES@
 
@@ -136,6 +139,7 @@ TAGFILES = $(SOURCES) ${HFILES} ${ALLPARAM} ${POSSLIBS}
 OBS = inferiors.o regcache.o remote-utils.o server.o signals.o target.o \
 	utils.o version.o \
 	mem-break.o hostio.o event-loop.o tracepoint.o \
+	xml-utils.o common-utils.o ptid.o buffer.o \
 	$(XML_BUILTIN) \
 	$(DEPFILES) $(LIBOBJS)
 GDBREPLAY_OBS = gdbreplay.o version.o
@@ -234,7 +238,7 @@ gdbreplay$(EXEEXT): $(GDBREPLAY_OBS)
 	${CC-LD} $(INTERNAL_CFLAGS) $(INTERNAL_LDFLAGS) -o gdbreplay$(EXEEXT) $(GDBREPLAY_OBS) \
 	  $(XM_CLIBS)
 
-IPA_OBJS=tracepoint-ipa.o utils-ipa.o regcache-ipa.o remote-utils-ipa.o ${IPA_DEPFILES}
+IPA_OBJS=tracepoint-ipa.o utils-ipa.o regcache-ipa.o remote-utils-ipa.o common-utils-ipa.o ${IPA_DEPFILES}
 
 IPA_LIB=libinproctrace.so
 
@@ -331,8 +335,16 @@ regdef_h = $(srcdir)/../regformats/regdef.h
 regcache_h = $(srcdir)/regcache.h
 signals_def = $(srcdir)/../../include/gdb/signals.def
 signals_h = $(srcdir)/../../include/gdb/signals.h $(signals_def)
+ptid_h = $(srcdir)/../common/ptid.h
+linux_osdata_h = $(srcdir)/../common/linux-osdata.h
 server_h = $(srcdir)/server.h $(regcache_h) config.h $(srcdir)/target.h \
 		$(srcdir)/mem-break.h $(srcdir)/../common/gdb_signals.h \
+		$(srcdir)/../common/common-utils.h \
+		$(srcdir)/../common/xml-utils.h \
+		$(srcdir)/../common/buffer.h \
+		$(srcdir)/../common/gdb_assert.h \
+		$(srcdir)/../common/gdb_locale.h \
+		$(ptid_h) \
 		$(signals_h)
 
 linux_low_h = $(srcdir)/linux-low.h
@@ -358,6 +370,8 @@ tracepoint-ipa.o: tracepoint.c $(server_h) $(srcdir)/../common/ax.def
 	$(CC) -c $(IPAGENT_CFLAGS) $< -o tracepoint-ipa.o
 utils-ipa.o: utils.c $(server_h)
 	$(CC) -c $(IPAGENT_CFLAGS) $< -o utils-ipa.o
+common-utils-ipa.o: ../common/common-utils.c $(server_h)
+	$(CC) -c $(IPAGENT_CFLAGS) $< -o common-utils-ipa.o
 remote-utils-ipa.o: remote-utils.c $(server_h)
 	$(CC) -c $(IPAGENT_CFLAGS) $< -o remote-utils-ipa.o
 regcache-ipa.o: regcache.c $(server_h)
@@ -390,6 +404,21 @@ gdbreplay.o: gdbreplay.c config.h
 signals.o: ../common/signals.c $(server_h) $(signals_def)
 	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< -DGDBSERVER
 
+common-utils.o: ../common/common-utils.c $(server_h)
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< -DGDBSERVER
+
+xml-utils.o: ../common/xml-utils.c $(server_h)
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< -DGDBSERVER
+
+linux-osdata.o: ../common/linux-osdata.c $(server_h) $(linux_osdata_h) ../common/gdb_dirent.h
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< -DGDBSERVER
+
+ptid.o: ../common/ptid.c $(ptid_h)
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< -DGDBSERVER
+
+buffer.o: ../common/buffer.c $(server_h)
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< -DGDBSERVER
+
 # We build memmem.c without -Werror because this file is not under
 # our control.  On LynxOS, the compiler generates some warnings
 # because str-two-way.h uses a constant (MAX_SIZE) whose definition
@@ -413,7 +442,7 @@ i386-low.o: i386-low.c $(i386_low_h) $(server_h) $(target_h)
 
 i387-fp.o: i387-fp.c $(server_h)
 
-linux-low.o: linux-low.c $(linux_low_h) $(linux_ptrace_h) $(server_h)
+linux-low.o: linux-low.c $(linux_low_h) $(linux_ptrace_h) $(server_h) $(linux_osdata_h)
 	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< @USE_THREAD_DB@
 
 linux-arm-low.o: linux-arm-low.c $(linux_low_h) $(server_h) \
diff --git a/gdb/gdbserver/config.in b/gdb/gdbserver/config.in
index 909dcb969c2..65aa1ab098e 100644
--- a/gdb/gdbserver/config.in
+++ b/gdb/gdbserver/config.in
@@ -38,6 +38,10 @@
    don't. */
 #undef HAVE_DECL_VSNPRINTF
 
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_DIRENT_H
+
 /* Define to 1 if you have the `dladdr' function. */
 #undef HAVE_DLADDR
 
@@ -80,6 +84,9 @@
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+#undef HAVE_NDIR_H
+
 /* Define to 1 if you have the <netdb.h> header file. */
 #undef HAVE_NETDB_H
 
@@ -138,12 +145,20 @@
 /* Define to 1 if the target supports __sync_*_compare_and_swap */
 #undef HAVE_SYNC_BUILTINS
 
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_DIR_H
+
 /* Define to 1 if you have the <sys/file.h> header file. */
 #undef HAVE_SYS_FILE_H
 
 /* Define to 1 if you have the <sys/ioctl.h> header file. */
 #undef HAVE_SYS_IOCTL_H
 
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_NDIR_H
+
 /* Define to 1 if you have the <sys/procfs.h> header file. */
 #undef HAVE_SYS_PROCFS_H
 
diff --git a/gdb/gdbserver/configure b/gdb/gdbserver/configure
index aaa73fced50..c350159e23e 100755
--- a/gdb/gdbserver/configure
+++ b/gdb/gdbserver/configure
@@ -3799,6 +3799,165 @@ $as_echo "#define STDC_HEADERS 1" >>confdefs.h
 
 fi
 
+ac_header_dirent=no
+for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
+  as_ac_Header=`$as_echo "ac_cv_header_dirent_$ac_hdr" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_hdr that defines DIR" >&5
+$as_echo_n "checking for $ac_hdr that defines DIR... " >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <$ac_hdr>
+
+int
+main ()
+{
+if ((DIR *) 0)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_ac_Header=yes"
+else
+  eval "$as_ac_Header=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$as_ac_Header
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+eval as_val=\$$as_ac_Header
+   if test "x$as_val" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_hdr" | $as_tr_cpp` 1
+_ACEOF
+
+ac_header_dirent=$ac_hdr; break
+fi
+
+done
+# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
+if test $ac_header_dirent = dirent.h; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
+$as_echo_n "checking for library containing opendir... " >&6; }
+if test "${ac_cv_search_opendir+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char opendir ();
+int
+main ()
+{
+return opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' dir; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_opendir=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext
+  if test "${ac_cv_search_opendir+set}" = set; then :
+  break
+fi
+done
+if test "${ac_cv_search_opendir+set}" = set; then :
+
+else
+  ac_cv_search_opendir=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
+$as_echo "$ac_cv_search_opendir" >&6; }
+ac_res=$ac_cv_search_opendir
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
+$as_echo_n "checking for library containing opendir... " >&6; }
+if test "${ac_cv_search_opendir+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char opendir ();
+int
+main ()
+{
+return opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' x; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_opendir=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext
+  if test "${ac_cv_search_opendir+set}" = set; then :
+  break
+fi
+done
+if test "${ac_cv_search_opendir+set}" = set; then :
+
+else
+  ac_cv_search_opendir=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
+$as_echo "$ac_cv_search_opendir" >&6; }
+ac_res=$ac_cv_search_opendir
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+fi
+
 
 # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
 # for constant arguments.  Useless!
diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
index 07ac26a0000..567d3ea7e81 100644
--- a/gdb/gdbserver/configure.ac
+++ b/gdb/gdbserver/configure.ac
@@ -35,6 +35,7 @@ AC_PROG_INSTALL
 AC_ARG_PROGRAM
 
 AC_HEADER_STDC
+AC_HEADER_DIRENT
 
 AC_FUNC_ALLOCA
 AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
diff --git a/gdb/gdbserver/configure.srv b/gdb/gdbserver/configure.srv
index 55dd4cf733f..378b56ed150 100644
--- a/gdb/gdbserver/configure.srv
+++ b/gdb/gdbserver/configure.srv
@@ -46,7 +46,7 @@ case "${target}" in
 			srv_regobj="${srv_regobj} arm-with-vfpv2.o"
 			srv_regobj="${srv_regobj} arm-with-vfpv3.o"
 			srv_regobj="${srv_regobj} arm-with-neon.o"
-			srv_tgtobj="linux-low.o linux-arm-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-arm-low.o"
 			srv_xmlfiles="arm-with-iwmmxt.xml"
 			srv_xmlfiles="${srv_xmlfiles} arm-with-vfpv2.xml"
 			srv_xmlfiles="${srv_xmlfiles} arm-with-vfpv3.xml"
@@ -68,17 +68,17 @@ case "${target}" in
 			srv_mingwce=yes
 			;;
   bfin-*-*linux*)	srv_regobj=reg-bfin.o
-			srv_tgtobj="linux-low.o linux-bfin-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-bfin-low.o"
 			srv_linux_usrregs=yes
 			srv_linux_thread_db=yes
 			;;
   crisv32-*-linux*)	srv_regobj=reg-crisv32.o
-			srv_tgtobj="linux-low.o linux-crisv32-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-crisv32-low.o"
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
 			;;
   cris-*-linux*)	srv_regobj=reg-cris.o
-			srv_tgtobj="linux-low.o linux-cris-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-cris-low.o"
 			srv_linux_usrregs=yes
 			srv_linux_thread_db=yes
 			;;
@@ -92,7 +92,7 @@ case "${target}" in
 			    srv_regobj="$srv_regobj $srv_amd64_linux_regobj"
 			    srv_xmlfiles="${srv_xmlfiles} $srv_amd64_linux_xmlfiles"
 			fi
-			srv_tgtobj="linux-low.o linux-x86-low.o i386-low.o i387-fp.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-x86-low.o i386-low.o i387-fp.o"
 			srv_linux_usrregs=yes
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
@@ -123,11 +123,11 @@ case "${target}" in
 			srv_qnx="yes"
 			;;
   ia64-*-linux*)	srv_regobj=reg-ia64.o
-			srv_tgtobj="linux-low.o linux-ia64-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-ia64-low.o"
 			srv_linux_usrregs=yes
 			;;
   m32r*-*-linux*)	srv_regobj=reg-m32r.o
-			srv_tgtobj="linux-low.o linux-m32r-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-m32r-low.o"
 			srv_linux_usrregs=yes
  			srv_linux_thread_db=yes
 			;;
@@ -136,7 +136,7 @@ case "${target}" in
                         else
                           srv_regobj=reg-m68k.o
                         fi
-			srv_tgtobj="linux-low.o linux-m68k-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-m68k-low.o"
 			srv_linux_usrregs=yes
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
@@ -146,13 +146,13 @@ case "${target}" in
                         else
                           srv_regobj=reg-m68k.o
                         fi
-			srv_tgtobj="linux-low.o linux-m68k-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-m68k-low.o"
 			srv_linux_usrregs=yes
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
 			;;
   mips*-*-linux*)	srv_regobj="mips-linux.o mips64-linux.o"
-			srv_tgtobj="linux-low.o linux-mips-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-mips-low.o"
 			srv_xmlfiles="mips-linux.xml"
 			srv_xmlfiles="${srv_xmlfiles} mips-cpu.xml"
 			srv_xmlfiles="${srv_xmlfiles} mips-cp0.xml"
@@ -180,7 +180,7 @@ case "${target}" in
 			srv_regobj="${srv_regobj} powerpc-isa205-64l.o"
 			srv_regobj="${srv_regobj} powerpc-isa205-altivec64l.o"
 			srv_regobj="${srv_regobj} powerpc-isa205-vsx64l.o"
-			srv_tgtobj="linux-low.o linux-ppc-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-ppc-low.o"
 			srv_xmlfiles="rs6000/powerpc-32l.xml"
 			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-altivec32l.xml"
 			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-cell32l.xml"
@@ -216,7 +216,7 @@ case "${target}" in
   s390*-*-linux*)	srv_regobj="s390-linux32.o"
 			srv_regobj="${srv_regobj} s390-linux64.o"
 			srv_regobj="${srv_regobj} s390x-linux64.o"
-			srv_tgtobj="linux-low.o linux-s390-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-s390-low.o"
 			srv_xmlfiles="s390-linux32.xml"
 			srv_xmlfiles="${srv_xmlfiles} s390-linux64.xml"
 			srv_xmlfiles="${srv_xmlfiles} s390x-linux64.xml"
@@ -230,13 +230,13 @@ case "${target}" in
 			srv_linux_thread_db=yes
 			;;
   sh*-*-linux*)		srv_regobj=reg-sh.o
-			srv_tgtobj="linux-low.o linux-sh-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-sh-low.o"
 			srv_linux_usrregs=yes
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
 			;;
   sparc*-*-linux*)	srv_regobj=reg-sparc64.o
-			srv_tgtobj="linux-low.o linux-sparc-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-sparc-low.o"
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
 			;;
@@ -244,7 +244,7 @@ case "${target}" in
 			srv_tgtobj="spu-low.o"
 			;;
   x86_64-*-linux*)	srv_regobj="$srv_amd64_linux_regobj $srv_i386_linux_regobj"
-			srv_tgtobj="linux-low.o linux-x86-low.o i386-low.o i387-fp.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-x86-low.o i386-low.o i387-fp.o"
 			srv_xmlfiles="$srv_i386_linux_xmlfiles $srv_amd64_linux_xmlfiles"
 			srv_linux_usrregs=yes # This is for i386 progs.
 			srv_linux_regsets=yes
@@ -258,7 +258,7 @@ case "${target}" in
 			;;
 
   xtensa*-*-linux*)	srv_regobj=reg-xtensa.o
-			srv_tgtobj="linux-low.o linux-xtensa-low.o"
+			srv_tgtobj="linux-low.o linux-osdata.o linux-xtensa-low.o"
 			srv_linux_regsets=yes
 			;;
   *)			echo "Error: target not supported by gdbserver."
diff --git a/gdb/gdbserver/inferiors.c b/gdb/gdbserver/inferiors.c
index 2e3d1fe462a..a7e1a83927a 100644
--- a/gdb/gdbserver/inferiors.c
+++ b/gdb/gdbserver/inferiors.c
@@ -30,81 +30,6 @@ int dlls_changed;
 
 struct thread_info *current_inferior;
 
-
-/* Oft used ptids */
-ptid_t null_ptid;
-ptid_t minus_one_ptid;
-
-/* Create a ptid given the necessary PID, LWP, and TID components.  */
-
-ptid_t
-ptid_build (int pid, long lwp, long tid)
-{
-  ptid_t ptid;
-
-  ptid.pid = pid;
-  ptid.lwp = lwp;
-  ptid.tid = tid;
-  return ptid;
-}
-
-/* Create a ptid from just a pid.  */
-
-ptid_t
-pid_to_ptid (int pid)
-{
-  return ptid_build (pid, 0, 0);
-}
-
-/* Fetch the pid (process id) component from a ptid.  */
-
-int
-ptid_get_pid (ptid_t ptid)
-{
-  return ptid.pid;
-}
-
-/* Fetch the lwp (lightweight process) component from a ptid.  */
-
-long
-ptid_get_lwp (ptid_t ptid)
-{
-  return ptid.lwp;
-}
-
-/* Fetch the tid (thread id) component from a ptid.  */
-
-long
-ptid_get_tid (ptid_t ptid)
-{
-  return ptid.tid;
-}
-
-/* ptid_equal() is used to test equality of two ptids.  */
-
-int
-ptid_equal (ptid_t ptid1, ptid_t ptid2)
-{
-  return (ptid1.pid == ptid2.pid
-	  && ptid1.lwp == ptid2.lwp
-	  && ptid1.tid == ptid2.tid);
-}
-
-/* Return true if this ptid represents a process.  */
-
-int
-ptid_is_pid (ptid_t ptid)
-{
-  if (ptid_equal (minus_one_ptid, ptid))
-    return 0;
-  if (ptid_equal (null_ptid, ptid))
-    return 0;
-
-  return (ptid_get_pid (ptid) != 0
-	  && ptid_get_lwp (ptid) == 0
-	  && ptid_get_tid (ptid) == 0);
-}
-
 #define get_thread(inf) ((struct thread_info *)(inf))
 #define get_dll(inf) ((struct dll_info *)(inf))
 
@@ -518,10 +443,3 @@ current_process (void)
 
   return get_thread_process (current_inferior);
 }
-
-void
-initialize_inferiors (void)
-{
-  null_ptid = ptid_build (0, 0, 0);
-  minus_one_ptid = ptid_build (-1, 0, 0);
-}
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index d84fd680b73..a9cdacac51a 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -19,6 +19,7 @@
 
 #include "server.h"
 #include "linux-low.h"
+#include "linux-osdata.h"
 
 #include <sys/wait.h>
 #include <stdio.h>
@@ -118,7 +119,6 @@ static int linux_wait_for_event (ptid_t ptid, int *wstat, int options);
 static void *add_lwp (ptid_t ptid);
 static int linux_stopped_by_watchpoint (void);
 static void mark_lwp_dead (struct lwp_info *lwp, int wstat);
-static int linux_core_of_thread (ptid_t ptid);
 static void proceed_all_lwps (void);
 static int finish_step_over (struct lwp_info *lwp);
 static CORE_ADDR get_stop_pc (struct lwp_info *lwp);
@@ -4387,264 +4387,11 @@ linux_read_offsets (CORE_ADDR *text_p, CORE_ADDR *data_p)
 #endif
 
 static int
-compare_ints (const void *xa, const void *xb)
-{
-  int a = *(const int *)xa;
-  int b = *(const int *)xb;
-
-  return a - b;
-}
-
-static int *
-unique (int *b, int *e)
-{
-  int *d = b;
-  while (++b != e)
-    if (*d != *b)
-      *++d = *b;
-  return ++d;
-}
-
-/* Given PID, iterates over all threads in that process.
-
-   Information about each thread, in a format suitable for qXfer:osdata:thread
-   is printed to BUFFER, if it's not NULL.  BUFFER is assumed to be already
-   initialized, and the caller is responsible for finishing and appending '\0'
-   to it.
-
-   The list of cores that threads are running on is assigned to *CORES, if it
-   is not NULL.  If no cores are found, *CORES will be set to NULL.  Caller
-   should free *CORES.  */
-
-static void
-list_threads (int pid, struct buffer *buffer, char **cores)
-{
-  int count = 0;
-  int allocated = 10;
-  int *core_numbers = xmalloc (sizeof (int) * allocated);
-  char pathname[128];
-  DIR *dir;
-  struct dirent *dp;
-  struct stat statbuf;
-
-  sprintf (pathname, "/proc/%d/task", pid);
-  if (stat (pathname, &statbuf) == 0 && S_ISDIR (statbuf.st_mode))
-    {
-      dir = opendir (pathname);
-      if (!dir)
-	{
-	  free (core_numbers);
-	  return;
-	}
-
-      while ((dp = readdir (dir)) != NULL)
-	{
-	  unsigned long lwp = strtoul (dp->d_name, NULL, 10);
-
-	  if (lwp != 0)
-	    {
-	      unsigned core = linux_core_of_thread (ptid_build (pid, lwp, 0));
-
-	      if (core != -1)
-		{
-		  char s[sizeof ("4294967295")];
-		  sprintf (s, "%u", core);
-
-		  if (count == allocated)
-		    {
-		      allocated *= 2;
-		      core_numbers = realloc (core_numbers,
-					      sizeof (int) * allocated);
-		    }
-		  core_numbers[count++] = core;
-		  if (buffer)
-		    buffer_xml_printf (buffer,
-				       "<item>"
-				       "<column name=\"pid\">%d</column>"
-				       "<column name=\"tid\">%s</column>"
-				       "<column name=\"core\">%s</column>"
-				       "</item>", pid, dp->d_name, s);
-		}
-	      else
-		{
-		  if (buffer)
-		    buffer_xml_printf (buffer,
-				       "<item>"
-				       "<column name=\"pid\">%d</column>"
-				       "<column name=\"tid\">%s</column>"
-				       "</item>", pid, dp->d_name);
-		}
-	    }
-	}
-      closedir (dir);
-    }
-
-  if (cores)
-    {
-      *cores = NULL;
-      if (count > 0)
-	{
-	  struct buffer buffer2;
-	  int *b;
-	  int *e;
-	  qsort (core_numbers, count, sizeof (int), compare_ints);
-
-	  /* Remove duplicates. */
-	  b = core_numbers;
-	  e = unique (b, core_numbers + count);
-
-	  buffer_init (&buffer2);
-
-	  for (b = core_numbers; b != e; ++b)
-	    {
-	      char number[sizeof ("4294967295")];
-	      sprintf (number, "%u", *b);
-	      buffer_xml_printf (&buffer2, "%s%s",
-				 (b == core_numbers) ? "" : ",", number);
-	    }
-	  buffer_grow_str0 (&buffer2, "");
-
-	  *cores = buffer_finish (&buffer2);
-	}
-    }
-  free (core_numbers);
-}
-
-static void
-show_process (int pid, const char *username, struct buffer *buffer)
-{
-  char pathname[128];
-  FILE *f;
-  char cmd[MAXPATHLEN + 1];
-
-  sprintf (pathname, "/proc/%d/cmdline", pid);
-
-  if ((f = fopen (pathname, "r")) != NULL)
-    {
-      size_t len = fread (cmd, 1, sizeof (cmd) - 1, f);
-      if (len > 0)
-	{
-	  char *cores = 0;
-	  int i;
-	  for (i = 0; i < len; i++)
-	    if (cmd[i] == '\0')
-	      cmd[i] = ' ';
-	  cmd[len] = '\0';
-
-	  buffer_xml_printf (buffer,
-			     "<item>"
-			     "<column name=\"pid\">%d</column>"
-			     "<column name=\"user\">%s</column>"
-			     "<column name=\"command\">%s</column>",
-			     pid,
-			     username,
-			     cmd);
-
-	  /* This only collects core numbers, and does not print threads.  */
-	  list_threads (pid, NULL, &cores);
-
-	  if (cores)
-	    {
-	      buffer_xml_printf (buffer,
-				 "<column name=\"cores\">%s</column>", cores);
-	      free (cores);
-	    }
-
-	  buffer_xml_printf (buffer, "</item>");
-	}
-      fclose (f);
-    }
-}
-
-static int
 linux_qxfer_osdata (const char *annex,
 		    unsigned char *readbuf, unsigned const char *writebuf,
 		    CORE_ADDR offset, int len)
 {
-  /* We make the process list snapshot when the object starts to be
-     read.  */
-  static const char *buf;
-  static long len_avail = -1;
-  static struct buffer buffer;
-  int processes = 0;
-  int threads = 0;
-
-  DIR *dirp;
-
-  if (strcmp (annex, "processes") == 0)
-    processes = 1;
-  else if (strcmp (annex, "threads") == 0)
-    threads = 1;
-  else
-    return 0;
-
-  if (!readbuf || writebuf)
-    return 0;
-
-  if (offset == 0)
-    {
-      if (len_avail != -1 && len_avail != 0)
-       buffer_free (&buffer);
-      len_avail = 0;
-      buf = NULL;
-      buffer_init (&buffer);
-      if (processes)
-	buffer_grow_str (&buffer, "<osdata type=\"processes\">");
-      else if (threads)
-	buffer_grow_str (&buffer, "<osdata type=\"threads\">");
-
-      dirp = opendir ("/proc");
-      if (dirp)
-       {
-	 struct dirent *dp;
-	 while ((dp = readdir (dirp)) != NULL)
-	   {
-	     struct stat statbuf;
-	     char procentry[sizeof ("/proc/4294967295")];
-
-	     if (!isdigit (dp->d_name[0])
-		 || strlen (dp->d_name) > sizeof ("4294967295") - 1)
-	       continue;
-
-	     sprintf (procentry, "/proc/%s", dp->d_name);
-	     if (stat (procentry, &statbuf) == 0
-		 && S_ISDIR (statbuf.st_mode))
-	       {
-		 int pid = (int) strtoul (dp->d_name, NULL, 10);
-
-		 if (processes)
-		   {
-		     struct passwd *entry = getpwuid (statbuf.st_uid);
-		     show_process (pid, entry ? entry->pw_name : "?", &buffer);
-		   }
-		 else if (threads)
-		   {
-		     list_threads (pid, &buffer, NULL);
-		   }
-	       }
-	   }
-
-	 closedir (dirp);
-       }
-      buffer_grow_str0 (&buffer, "</osdata>\n");
-      buf = buffer_finish (&buffer);
-      len_avail = strlen (buf);
-    }
-
-  if (offset >= len_avail)
-    {
-      /* Done.  Get rid of the data.  */
-      buffer_free (&buffer);
-      buf = NULL;
-      len_avail = 0;
-      return 0;
-    }
-
-  if (len > len_avail - offset)
-    len = len_avail - offset;
-  memcpy (readbuf, buf + offset, len);
-
-  return len;
+  return linux_common_xfer_osdata (annex, readbuf, offset, len);
 }
 
 /* Convert a native/host siginfo object, into/from the siginfo in the
@@ -4907,63 +4654,6 @@ linux_qxfer_spu (const char *annex, unsigned char *readbuf,
   return ret;
 }
 
-static int
-linux_core_of_thread (ptid_t ptid)
-{
-  char filename[sizeof ("/proc//task//stat")
-		 + 2 * 20 /* decimal digits for 2 numbers, max 2^64 bit each */
-		 + 1];
-  FILE *f;
-  char *content = NULL;
-  char *p;
-  char *ts = 0;
-  int content_read = 0;
-  int i;
-  int core;
-
-  sprintf (filename, "/proc/%d/task/%ld/stat",
-	   ptid_get_pid (ptid), ptid_get_lwp (ptid));
-  f = fopen (filename, "r");
-  if (!f)
-    return -1;
-
-  for (;;)
-    {
-      int n;
-      content = realloc (content, content_read + 1024);
-      n = fread (content + content_read, 1, 1024, f);
-      content_read += n;
-      if (n < 1024)
-	{
-	  content[content_read] = '\0';
-	  break;
-	}
-    }
-
-  p = strchr (content, '(');
-
-  /* Skip ")".  */
-  if (p != NULL)
-    p = strchr (p, ')');
-  if (p != NULL)
-    p++;
-
-  /* If the first field after program name has index 0, then core number is
-     the field with index 36.  There's no constant for that anywhere.  */
-  if (p != NULL)
-    p = strtok_r (p, " ", &ts);
-  for (i = 0; p != NULL && i != 36; ++i)
-    p = strtok_r (NULL, " ", &ts);
-
-  if (p == NULL || sscanf (p, "%d", &core) == 0)
-    core = -1;
-
-  free (content);
-  fclose (f);
-
-  return core;
-}
-
 static void
 linux_process_qsupported (const char *query)
 {
@@ -5111,7 +4801,7 @@ static struct target_ops linux_target_ops = {
 #else
   NULL,
 #endif
-  linux_core_of_thread,
+  linux_common_core_of_thread,
   linux_process_qsupported,
   linux_supports_tracepoints,
   linux_read_pc,
diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index da9018dc817..8832417dc3e 100644
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -1714,168 +1714,4 @@ monitor_output (const char *msg)
   free (buf);
 }
 
-/* Return a malloc allocated string with special characters from TEXT
-   replaced by entity references.  */
-
-char *
-xml_escape_text (const char *text)
-{
-  char *result;
-  int i, special;
-
-  /* Compute the length of the result.  */
-  for (i = 0, special = 0; text[i] != '\0'; i++)
-    switch (text[i])
-      {
-      case '\'':
-      case '\"':
-	special += 5;
-	break;
-      case '&':
-	special += 4;
-	break;
-      case '<':
-      case '>':
-	special += 3;
-	break;
-      default:
-	break;
-      }
-
-  /* Expand the result.  */
-  result = xmalloc (i + special + 1);
-  for (i = 0, special = 0; text[i] != '\0'; i++)
-    switch (text[i])
-      {
-      case '\'':
-	strcpy (result + i + special, "&apos;");
-	special += 5;
-	break;
-      case '\"':
-	strcpy (result + i + special, "&quot;");
-	special += 5;
-	break;
-      case '&':
-	strcpy (result + i + special, "&amp;");
-	special += 4;
-	break;
-      case '<':
-	strcpy (result + i + special, "&lt;");
-	special += 3;
-	break;
-      case '>':
-	strcpy (result + i + special, "&gt;");
-	special += 3;
-	break;
-      default:
-	result[i + special] = text[i];
-	break;
-      }
-  result[i + special] = '\0';
-
-  return result;
-}
-
-void
-buffer_grow (struct buffer *buffer, const char *data, size_t size)
-{
-  char *new_buffer;
-  size_t new_buffer_size;
-
-  if (size == 0)
-    return;
-
-  new_buffer_size = buffer->buffer_size;
-
-  if (new_buffer_size == 0)
-    new_buffer_size = 1;
-
-  while (buffer->used_size + size > new_buffer_size)
-    new_buffer_size *= 2;
-  new_buffer = realloc (buffer->buffer, new_buffer_size);
-  if (!new_buffer)
-    abort ();
-  memcpy (new_buffer + buffer->used_size, data, size);
-  buffer->buffer = new_buffer;
-  buffer->buffer_size = new_buffer_size;
-  buffer->used_size += size;
-}
-
-void
-buffer_free (struct buffer *buffer)
-{
-  if (!buffer)
-    return;
-
-  free (buffer->buffer);
-  buffer->buffer = NULL;
-  buffer->buffer_size = 0;
-  buffer->used_size = 0;
-}
-
-void
-buffer_init (struct buffer *buffer)
-{
-  memset (buffer, 0, sizeof (*buffer));
-}
-
-char*
-buffer_finish (struct buffer *buffer)
-{
-  char *ret = buffer->buffer;
-  buffer->buffer = NULL;
-  buffer->buffer_size = 0;
-  buffer->used_size = 0;
-  return ret;
-}
-
-void
-buffer_xml_printf (struct buffer *buffer, const char *format, ...)
-{
-  va_list ap;
-  const char *f;
-  const char *prev;
-  int percent = 0;
-
-  va_start (ap, format);
-
-  prev = format;
-  for (f = format; *f; f++)
-    {
-      if (percent)
-       {
-	 switch (*f)
-	   {
-	   case 's':
-	     {
-	       char *p;
-	       char *a = va_arg (ap, char *);
-	       buffer_grow (buffer, prev, f - prev - 1);
-	       p = xml_escape_text (a);
-	       buffer_grow_str (buffer, p);
-	       free (p);
-	       prev = f + 1;
-	     }
-	     break;
-	   case 'd':
-	     {
-	       int i = va_arg (ap, int);
-	       char b[sizeof ("4294967295")];
-
-	       buffer_grow (buffer, prev, f - prev - 1);
-	       sprintf (b, "%d", i);
-	       buffer_grow_str (buffer, b);
-	       prev = f + 1;
-	     }
-	   }
-	 percent = 0;
-       }
-      else if (*f == '%')
-       percent = 1;
-    }
-
-  buffer_grow_str (buffer, prev);
-  va_end (ap);
-}
-
 #endif
diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index fd06c8f9a2a..a87aef558a1 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -2582,7 +2582,6 @@ main (int argc, char *argv[])
       exit (1);
     }
 
-  initialize_inferiors ();
   initialize_async_io ();
   initialize_low ();
   if (target_supports_tracepoints ())
diff --git a/gdb/gdbserver/server.h b/gdb/gdbserver/server.h
index f1147d6939a..8d8b7f9efdd 100644
--- a/gdb/gdbserver/server.h
+++ b/gdb/gdbserver/server.h
@@ -105,6 +105,11 @@ int vsnprintf(char *str, size_t size, const char *format, va_list ap);
 /* A type used for binary buffers.  */
 typedef unsigned char gdb_byte;
 
+#include "ptid.h"
+#include "buffer.h"
+#include "xml-utils.h"
+#include "gdb_locale.h"
+
 /* FIXME: This should probably be autoconf'd for.  It's an integer type at
    least the size of a (void *).  */
 typedef long long CORE_ADDR;
@@ -112,68 +117,6 @@ typedef long long CORE_ADDR;
 typedef long long LONGEST;
 typedef unsigned long long ULONGEST;
 
-/* The ptid struct is a collection of the various "ids" necessary
-   for identifying the inferior.  This consists of the process id
-   (pid), thread id (tid), and other fields necessary for uniquely
-   identifying the inferior process/thread being debugged.  When
-   manipulating ptids, the constructors, accessors, and predicate
-   declared in server.h should be used.  These are as follows:
-
-      ptid_build	- Make a new ptid from a pid, lwp, and tid.
-      pid_to_ptid	- Make a new ptid from just a pid.
-      ptid_get_pid	- Fetch the pid component of a ptid.
-      ptid_get_lwp	- Fetch the lwp component of a ptid.
-      ptid_get_tid	- Fetch the tid component of a ptid.
-      ptid_equal	- Test to see if two ptids are equal.
-
-   Please do NOT access the struct ptid members directly (except, of
-   course, in the implementation of the above ptid manipulation
-   functions).  */
-
-struct ptid
-  {
-    /* Process id */
-    int pid;
-
-    /* Lightweight process id */
-    long lwp;
-
-    /* Thread id */
-    long tid;
-  };
-
-typedef struct ptid ptid_t;
-
-/* The -1 ptid, often used to indicate either an error condition or a
-   "don't care" condition, i.e, "run all threads".  */
-extern ptid_t minus_one_ptid;
-
-/* The null or zero ptid, often used to indicate no process.  */
-extern ptid_t null_ptid;
-
-/* Attempt to find and return an existing ptid with the given PID,
-   LWP, and TID components.  If none exists, create a new one and
-   return that.  */
-ptid_t ptid_build (int pid, long lwp, long tid);
-
-/* Create a ptid from just a pid.  */
-ptid_t pid_to_ptid (int pid);
-
-/* Fetch the pid (process id) component from a ptid.  */
-int ptid_get_pid (ptid_t ptid);
-
-/* Fetch the lwp (lightweight process) component from a ptid.  */
-long ptid_get_lwp (ptid_t ptid);
-
-/* Fetch the tid (thread id) component from a ptid.  */
-long ptid_get_tid (ptid_t ptid);
-
-/* Compare two ptids to see if they are equal.  */
-extern int ptid_equal (ptid_t p1, ptid_t p2);
-
-/* Return true if this ptid represents a process id.  */
-extern int ptid_is_pid (ptid_t ptid);
-
 /* Generic information for tracking a list of ``inferiors'' - threads,
    processes, etc.  */
 struct inferior_list
@@ -294,8 +237,6 @@ extern struct inferior_list all_threads;
 extern struct inferior_list all_dlls;
 extern int dlls_changed;
 
-void initialize_inferiors (void);
-
 void add_inferior_to_list (struct inferior_list *list,
 			   struct inferior_list_entry *new_inferior);
 void for_each_inferior (struct inferior_list *list,
@@ -454,43 +395,8 @@ int relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc);
 
 void monitor_output (const char *msg);
 
-char *xml_escape_text (const char *text);
-
-/* Simple growing buffer.  */
-
-struct buffer
-{
-  char *buffer;
-  size_t buffer_size; /* allocated size */
-  size_t used_size; /* actually used size */
-};
-
-/* Append DATA of size SIZE to the end of BUFFER.  Grows the buffer to
-   accommodate the new data.  */
-void buffer_grow (struct buffer *buffer, const char *data, size_t size);
-
-/* Release any memory held by BUFFER.  */
-void buffer_free (struct buffer *buffer);
-
-/* Initialize BUFFER.  BUFFER holds no memory afterwards.  */
-void buffer_init (struct buffer *buffer);
-
-/* Return a pointer into BUFFER data, effectivelly transfering
-   ownership of the buffer memory to the caller.  Calling buffer_free
-   afterwards has no effect on the returned data.  */
-char* buffer_finish (struct buffer *buffer);
-
-/* Simple printf to BUFFER function.  Current implemented formatters:
-   %s - grow an xml escaped text in OBSTACK.  */
-void buffer_xml_printf (struct buffer *buffer, const char *format, ...)
-  ATTR_FORMAT (printf, 2, 3);
-
-#define buffer_grow_str(BUFFER,STRING)         \
-  buffer_grow (BUFFER, STRING, strlen (STRING))
-#define buffer_grow_str0(BUFFER,STRING)                        \
-  buffer_grow (BUFFER, STRING, strlen (STRING) + 1)
-
 /* Functions from utils.c */
+#include "common-utils.h"
 
 void *xmalloc (size_t) ATTR_MALLOC;
 void *xrealloc (void *, size_t);
@@ -502,8 +408,6 @@ void freeargv (char **argv);
 void perror_with_name (const char *string);
 void error (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
 void fatal (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
-void internal_error (const char *file, int line, const char *, ...)
-     ATTR_NORETURN ATTR_FORMAT (printf, 3, 4);
 void warning (const char *string,...) ATTR_FORMAT (printf, 1, 2);
 char *paddress (CORE_ADDR addr);
 char *pulongest (ULONGEST u);
@@ -511,33 +415,7 @@ char *plongest (LONGEST l);
 char *phex_nz (ULONGEST l, int sizeof_l);
 char *pfildes (gdb_fildes_t fd);
 
-#define gdb_assert(expr)                                                      \
-  ((void) ((expr) ? 0 :                                                       \
-	   (gdb_assert_fail (#expr, __FILE__, __LINE__, ASSERT_FUNCTION), 0)))
-
-/* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
-   which contains the name of the function currently being defined.
-   This is broken in G++ before version 2.6.
-   C9x has a similar variable called __func__, but prefer the GCC one since
-   it demangles C++ function names.  */
-#if (GCC_VERSION >= 2004)
-#define ASSERT_FUNCTION		__PRETTY_FUNCTION__
-#else
-#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
-#define ASSERT_FUNCTION		__func__
-#endif
-#endif
-
-/* This prints an "Assertion failed" message, and exits.  */
-#if defined (ASSERT_FUNCTION)
-#define gdb_assert_fail(assertion, file, line, function)		\
-  internal_error (file, line, "%s: Assertion `%s' failed.",		\
-		  function, assertion)
-#else
-#define gdb_assert_fail(assertion, file, line, function)		\
-  internal_error (file, line, "Assertion `%s' failed.",			\
-		  assertion)
-#endif
+#include "gdb_assert.h"
 
 /* Maximum number of bytes to read/write at once.  The value here
    is chosen to fill up a packet (the headers account for the 32).  */
diff --git a/gdb/gdbserver/utils.c b/gdb/gdbserver/utils.c
index 78ae6f7fcee..f804ced1ea1 100644
--- a/gdb/gdbserver/utils.c
+++ b/gdb/gdbserver/utils.c
@@ -35,10 +35,8 @@
 
 /* Generally useful subroutines used throughout the program.  */
 
-static void malloc_failure (size_t size) ATTR_NORETURN;
-
-static void
-malloc_failure (size_t size)
+void
+malloc_failure (long size)
 {
   fprintf (stderr,
 	   PREFIX "ran out of memory while trying to allocate %lu bytes\n",
@@ -46,61 +44,6 @@ malloc_failure (size_t size)
   exit (1);
 }
 
-/* Allocate memory without fail.
-   If malloc fails, this will print a message to stderr and exit.  */
-
-void *
-xmalloc (size_t size)
-{
-  void *newmem;
-
-  if (size == 0)
-    size = 1;
-  newmem = malloc (size);
-  if (!newmem)
-    malloc_failure (size);
-
-  return newmem;
-}
-
-/* Reallocate memory without fail.  This works like xmalloc. */
-
-void *
-xrealloc (void *ptr, size_t size)
-{
-  void *val;
-
-  if (size == 0)
-    size = 1;
-
-  if (ptr != NULL)
-    val = realloc (ptr, size);	/* OK: realloc */
-  else
-    val = malloc (size);	/* OK: malloc */
-  if (val == NULL)
-    malloc_failure (size);
-
-  return val;
-}
-
-/* Allocate memory without fail and set it to zero.
-   If malloc fails, this will print a message to stderr and exit.  */
-
-void *
-xcalloc (size_t nelem, size_t elsize)
-{
-  void *newmem;
-
-  if (nelem == 0 || elsize == 0)
-    nelem = elsize = 1;
-
-  newmem = calloc (nelem, elsize);
-  if (!newmem)
-    malloc_failure (nelem * elsize);
-
-  return newmem;
-}
-
 /* Copy a string into a memory buffer.
    If malloc fails, this will print a message to stderr and exit.  */
 
@@ -239,22 +182,6 @@ get_cell (void)
   return buf[cell];
 }
 
-/* Stdarg wrapper around vsnprintf.
-   SIZE is the size of the buffer pointed to by STR.  */
-
-int
-xsnprintf (char *str, size_t size, const char *format, ...)
-{
-  va_list args;
-  int ret;
-
-  va_start (args, format);
-  ret = vsnprintf (str, size, format, args);
-  va_end (args);
-
-  return ret;
-}
-
 static char *
 decimal2str (char *sign, ULONGEST addr)
 {
diff --git a/gdb/inferior.h b/gdb/inferior.h
index 346bb87a02d..cf747a650cd 100644
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -32,6 +32,8 @@ struct regcache;
 struct ui_out;
 struct terminal_info;
 
+#include "ptid.h"
+
 /* For bpstat.  */
 #include "breakpoint.h"
 
@@ -63,36 +65,6 @@ extern void discard_infcall_control_state (struct infcall_control_state *);
 extern struct regcache *
   get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
 
-/* The -1 ptid, often used to indicate either an error condition
-   or a "don't care" condition, i.e, "run all threads."  */
-extern ptid_t minus_one_ptid;
-
-/* The null or zero ptid, often used to indicate no process.  */
-extern ptid_t null_ptid;
-
-/* Attempt to find and return an existing ptid with the given PID, LWP,
-   and TID components.  If none exists, create a new one and return
-   that.  */
-ptid_t ptid_build (int pid, long lwp, long tid);
-
-/* Find/Create a ptid from just a pid.  */
-ptid_t pid_to_ptid (int pid);
-
-/* Fetch the pid (process id) component from a ptid.  */
-int ptid_get_pid (ptid_t ptid);
-
-/* Fetch the lwp (lightweight process) component from a ptid.  */
-long ptid_get_lwp (ptid_t ptid);
-
-/* Fetch the tid (thread id) component from a ptid.  */
-long ptid_get_tid (ptid_t ptid);
-
-/* Compare two ptids to see if they are equal.  */
-extern int ptid_equal (ptid_t p1, ptid_t p2);
-
-/* Return true if PTID represents a process id.  */
-extern int ptid_is_pid (ptid_t ptid);
-
 /* Returns true if PTID matches filter FILTER.  FILTER can be the wild
    card MINUS_ONE_PTID (all ptid match it); can be a ptid representing
    a process (ptid_is_pid returns true), in which case, all lwps and
diff --git a/gdb/infrun.c b/gdb/infrun.c
index 91e0fc27e77..f92bc9b20dc 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -6803,77 +6803,6 @@ inferior_has_called_syscall (ptid_t pid, int *syscall_number)
   return 1;
 }
 
-/* Oft used ptids */
-ptid_t null_ptid;
-ptid_t minus_one_ptid;
-
-/* Create a ptid given the necessary PID, LWP, and TID components.  */
-
-ptid_t
-ptid_build (int pid, long lwp, long tid)
-{
-  ptid_t ptid;
-
-  ptid.pid = pid;
-  ptid.lwp = lwp;
-  ptid.tid = tid;
-  return ptid;
-}
-
-/* Create a ptid from just a pid.  */
-
-ptid_t
-pid_to_ptid (int pid)
-{
-  return ptid_build (pid, 0, 0);
-}
-
-/* Fetch the pid (process id) component from a ptid.  */
-
-int
-ptid_get_pid (ptid_t ptid)
-{
-  return ptid.pid;
-}
-
-/* Fetch the lwp (lightweight process) component from a ptid.  */
-
-long
-ptid_get_lwp (ptid_t ptid)
-{
-  return ptid.lwp;
-}
-
-/* Fetch the tid (thread id) component from a ptid.  */
-
-long
-ptid_get_tid (ptid_t ptid)
-{
-  return ptid.tid;
-}
-
-/* ptid_equal() is used to test equality of two ptids.  */
-
-int
-ptid_equal (ptid_t ptid1, ptid_t ptid2)
-{
-  return (ptid1.pid == ptid2.pid && ptid1.lwp == ptid2.lwp
-	  && ptid1.tid == ptid2.tid);
-}
-
-/* Returns true if PTID represents a process.  */
-
-int
-ptid_is_pid (ptid_t ptid)
-{
-  if (ptid_equal (minus_one_ptid, ptid))
-    return 0;
-  if (ptid_equal (null_ptid, ptid))
-    return 0;
-
-  return (ptid_get_lwp (ptid) == 0 && ptid_get_tid (ptid) == 0);
-}
-
 int
 ptid_match (ptid_t ptid, ptid_t filter)
 {
@@ -7263,8 +7192,6 @@ Tells gdb whether to detach the child of a fork."),
 			   NULL, NULL, &setlist, &showlist);
 
   /* ptid initializations */
-  null_ptid = ptid_build (0, 0, 0);
-  minus_one_ptid = ptid_build (-1, 0, 0);
   inferior_ptid = null_ptid;
   target_last_wait_ptid = minus_one_ptid;
 
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index ec4c7884400..c832902668b 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -57,6 +57,7 @@
 #include "terminal.h"
 #include <sys/vfs.h>
 #include "solib.h"
+#include "linux-osdata.h"
 
 #ifndef SPUFS_MAGIC
 #define SPUFS_MAGIC 0x23c9b64e
@@ -5114,148 +5115,9 @@ linux_nat_xfer_osdata (struct target_ops *ops, enum target_object object,
 		       const char *annex, gdb_byte *readbuf,
 		       const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
 {
-  /* We make the process list snapshot when the object starts to be
-     read.  */
-  static const char *buf;
-  static LONGEST len_avail = -1;
-  static struct obstack obstack;
-
-  DIR *dirp;
-
   gdb_assert (object == TARGET_OBJECT_OSDATA);
 
-  if (!annex)
-    {
-      if (offset == 0)
-	{
-	  if (len_avail != -1 && len_avail != 0)
-	    obstack_free (&obstack, NULL);
-	  len_avail = 0;
-	  buf = NULL;
-	  obstack_init (&obstack);
-	  obstack_grow_str (&obstack, "<osdata type=\"types\">\n");
-
-	  obstack_xml_printf (&obstack,
-			      "<item>"
-			      "<column name=\"Type\">processes</column>"
-			      "<column name=\"Description\">"
-			      "Listing of all processes</column>"
-			      "</item>");
-
-	  obstack_grow_str0 (&obstack, "</osdata>\n");
-	  buf = obstack_finish (&obstack);
-	  len_avail = strlen (buf);
-	}
-
-      if (offset >= len_avail)
-	{
-	  /* Done.  Get rid of the obstack.  */
-	  obstack_free (&obstack, NULL);
-	  buf = NULL;
-	  len_avail = 0;
-	  return 0;
-	}
-
-      if (len > len_avail - offset)
-	len = len_avail - offset;
-      memcpy (readbuf, buf + offset, len);
-
-      return len;
-    }
-
-  if (strcmp (annex, "processes") != 0)
-    return 0;
-
-  gdb_assert (readbuf && !writebuf);
-
-  if (offset == 0)
-    {
-      if (len_avail != -1 && len_avail != 0)
-	obstack_free (&obstack, NULL);
-      len_avail = 0;
-      buf = NULL;
-      obstack_init (&obstack);
-      obstack_grow_str (&obstack, "<osdata type=\"processes\">\n");
-
-      dirp = opendir ("/proc");
-      if (dirp)
-	{
-	  struct dirent *dp;
-
-	  while ((dp = readdir (dirp)) != NULL)
-	    {
-	      struct stat statbuf;
-	      char procentry[sizeof ("/proc/4294967295")];
-
-	      if (!isdigit (dp->d_name[0])
-		  || NAMELEN (dp) > sizeof ("4294967295") - 1)
-		continue;
-
-	      sprintf (procentry, "/proc/%s", dp->d_name);
-	      if (stat (procentry, &statbuf) == 0
-		  && S_ISDIR (statbuf.st_mode))
-		{
-		  char *pathname;
-		  FILE *f;
-		  char cmd[MAXPATHLEN + 1];
-		  struct passwd *entry;
-
-		  pathname = xstrprintf ("/proc/%s/cmdline", dp->d_name);
-		  entry = getpwuid (statbuf.st_uid);
-
-		  if ((f = fopen (pathname, "r")) != NULL)
-		    {
-		      size_t length = fread (cmd, 1, sizeof (cmd) - 1, f);
-
-		      if (length > 0)
-			{
-			  int i;
-
-			  for (i = 0; i < length; i++)
-			    if (cmd[i] == '\0')
-			      cmd[i] = ' ';
-			  cmd[length] = '\0';
-
-			  obstack_xml_printf (
-			    &obstack,
-			    "<item>"
-			    "<column name=\"pid\">%s</column>"
-			    "<column name=\"user\">%s</column>"
-			    "<column name=\"command\">%s</column>"
-			    "</item>",
-			    dp->d_name,
-			    entry ? entry->pw_name : "?",
-			    cmd);
-			}
-		      fclose (f);
-		    }
-
-		  xfree (pathname);
-		}
-	    }
-
-	  closedir (dirp);
-	}
-
-      obstack_grow_str0 (&obstack, "</osdata>\n");
-      buf = obstack_finish (&obstack);
-      len_avail = strlen (buf);
-    }
-
-  if (offset >= len_avail)
-    {
-      /* Done.  Get rid of the obstack.  */
-      obstack_free (&obstack, NULL);
-      buf = NULL;
-      len_avail = 0;
-      return 0;
-    }
-
-  if (len > len_avail - offset)
-    len = len_avail - offset;
-  memcpy (readbuf, buf + offset, len);
-
-  return len;
+  return linux_common_xfer_osdata (annex, readbuf, offset, len);
 }
 
 static LONGEST
diff --git a/gdb/utils.c b/gdb/utils.c
index d10669a72c9..13e99b4e15d 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -1210,7 +1210,7 @@ quit (void)
    memory requested in SIZE.  */
 
 void
-nomem (long size)
+malloc_failure (long size)
 {
   if (size > 0)
     {
@@ -1224,146 +1224,6 @@ nomem (long size)
     }
 }
 
-/* The xmalloc() (libiberty.h) family of memory management routines.
-
-   These are like the ISO-C malloc() family except that they implement
-   consistent semantics and guard against typical memory management
-   problems.  */
-
-/* NOTE: These are declared using PTR to ensure consistency with
-   "libiberty.h".  xfree() is GDB local.  */
-
-PTR				/* ARI: PTR */
-xmalloc (size_t size)
-{
-  void *val;
-
-  /* See libiberty/xmalloc.c.  This function need's to match that's
-     semantics.  It never returns NULL.  */
-  if (size == 0)
-    size = 1;
-
-  val = malloc (size);		/* ARI: malloc */
-  if (val == NULL)
-    nomem (size);
-
-  return (val);
-}
-
-void *
-xzalloc (size_t size)
-{
-  return xcalloc (1, size);
-}
-
-PTR				/* ARI: PTR */
-xrealloc (PTR ptr, size_t size)	/* ARI: PTR */
-{
-  void *val;
-
-  /* See libiberty/xmalloc.c.  This function need's to match that's
-     semantics.  It never returns NULL.  */
-  if (size == 0)
-    size = 1;
-
-  if (ptr != NULL)
-    val = realloc (ptr, size);	/* ARI: realloc */
-  else
-    val = malloc (size);		/* ARI: malloc */
-  if (val == NULL)
-    nomem (size);
-
-  return (val);
-}
-
-PTR				/* ARI: PTR */
-xcalloc (size_t number, size_t size)
-{
-  void *mem;
-
-  /* See libiberty/xmalloc.c.  This function need's to match that's
-     semantics.  It never returns NULL.  */
-  if (number == 0 || size == 0)
-    {
-      number = 1;
-      size = 1;
-    }
-
-  mem = calloc (number, size);		/* ARI: xcalloc */
-  if (mem == NULL)
-    nomem (number * size);
-
-  return mem;
-}
-
-void
-xfree (void *ptr)
-{
-  if (ptr != NULL)
-    free (ptr);		/* ARI: free */
-}
-
-
-/* Like asprintf/vasprintf but get an internal_error if the call
-   fails.  */
-
-char *
-xstrprintf (const char *format, ...)
-{
-  char *ret;
-  va_list args;
-
-  va_start (args, format);
-  ret = xstrvprintf (format, args);
-  va_end (args);
-  return ret;
-}
-
-void
-xasprintf (char **ret, const char *format, ...)
-{
-  va_list args;
-
-  va_start (args, format);
-  (*ret) = xstrvprintf (format, args);
-  va_end (args);
-}
-
-void
-xvasprintf (char **ret, const char *format, va_list ap)
-{
-  (*ret) = xstrvprintf (format, ap);
-}
-
-char *
-xstrvprintf (const char *format, va_list ap)
-{
-  char *ret = NULL;
-  int status = vasprintf (&ret, format, ap);
-
-  /* NULL is returned when there was a memory allocation problem, or
-     any other error (for instance, a bad format string).  A negative
-     status (the printed length) with a non-NULL buffer should never
-     happen, but just to be sure.  */
-  if (ret == NULL || status < 0)
-    internal_error (__FILE__, __LINE__, _("vasprintf call failed"));
-  return ret;
-}
-
-int
-xsnprintf (char *str, size_t size, const char *format, ...)
-{
-  va_list args;
-  int ret;
-
-  va_start (args, format);
-  ret = vsnprintf (str, size, format, args);
-  gdb_assert (ret < size);
-  va_end (args);
-
-  return ret;
-}
-
 /* My replacement for the read system call.
    Used like `read' but keeps going if `read' returns too soon.  */
 
@@ -1385,7 +1245,7 @@ myread (int desc, char *addr, int len)
     }
   return orglen;
 }
-
+
 /* Make a copy of the string at PTR with SIZE characters
    (and add a null character at the end in the copy).
    Uses malloc to get the space.  Returns the address of the copy.  */
@@ -3741,7 +3601,7 @@ gdb_buildargv (const char *s)
   char **argv = buildargv (s);
 
   if (s != NULL && argv == NULL)
-    nomem (0);
+    malloc_failure (0);
   return argv;
 }
 
diff --git a/gdb/xml-support.c b/gdb/xml-support.c
index e0ac8de68b9..2edc82cb2ea 100644
--- a/gdb/xml-support.c
+++ b/gdb/xml-support.c
@@ -458,7 +458,7 @@ gdb_xml_create_parser_and_cleanup_1 (const char *name,
   if (parser->expat_parser == NULL)
     {
       xfree (parser);
-      nomem (0);
+      malloc_failure (0);
     }
 
   parser->name = name;
@@ -990,68 +990,6 @@ show_debug_xml (struct ui_file *file, int from_tty,
   fprintf_filtered (file, _("XML debugging is %s.\n"), value);
 }
 
-/* Return a malloc allocated string with special characters from TEXT
-   replaced by entity references.  */
-
-char *
-xml_escape_text (const char *text)
-{
-  char *result;
-  int i, special;
-
-  /* Compute the length of the result.  */
-  for (i = 0, special = 0; text[i] != '\0'; i++)
-    switch (text[i])
-      {
-      case '\'':
-      case '\"':
-	special += 5;
-	break;
-      case '&':
-	special += 4;
-	break;
-      case '<':
-      case '>':
-	special += 3;
-	break;
-      default:
-	break;
-      }
-
-  /* Expand the result.  */
-  result = xmalloc (i + special + 1);
-  for (i = 0, special = 0; text[i] != '\0'; i++)
-    switch (text[i])
-      {
-      case '\'':
-	strcpy (result + i + special, "&apos;");
-	special += 5;
-	break;
-      case '\"':
-	strcpy (result + i + special, "&quot;");
-	special += 5;
-	break;
-      case '&':
-	strcpy (result + i + special, "&amp;");
-	special += 4;
-	break;
-      case '<':
-	strcpy (result + i + special, "&lt;");
-	special += 3;
-	break;
-      case '>':
-	strcpy (result + i + special, "&gt;");
-	special += 3;
-	break;
-      default:
-	result[i + special] = text[i];
-	break;
-      }
-  result[i + special] = '\0';
-
-  return result;
-}
-
 void
 obstack_xml_printf (struct obstack *obstack, const char *format, ...)
 {
@@ -1106,7 +1044,7 @@ xml_fetch_content_from_file (const char *filename, void *baton)
       char *fullname = concat (dirname, "/", filename, (char *) NULL);
 
       if (fullname == NULL)
-	nomem (0);
+	malloc_failure (0);
       file = fopen (fullname, FOPEN_RT);
       xfree (fullname);
     }
diff --git a/gdb/xml-support.h b/gdb/xml-support.h
index 4d5df5c4fef..bc3a89d6776 100644
--- a/gdb/xml-support.h
+++ b/gdb/xml-support.h
@@ -24,6 +24,7 @@
 
 #include "gdb_obstack.h"
 #include "vec.h"
+#include "xml-utils.h"
 
 struct gdb_xml_parser;
 struct gdb_xml_element;
@@ -48,11 +49,6 @@ LONGEST xml_builtin_xfer_partial (const char *filename,
 
 extern const char *xml_builtin[][2];
 
-/* Return a malloc allocated string with special characters from TEXT
-   replaced by entity references.  */
-
-char *xml_escape_text (const char *text);
-
 /* Support for XInclude.  */
 
 /* Callback to fetch a new XML file, based on the provided HREF.  */